Gasoline for lawn mower what proportion

Can A Gasoline Engine Run On Diesel Fuel?

What brand of gasoline is required for 4-stroke engines??

STIHL recommends that you only use fuel with a minimum octane rating of 90 in 4-stroke internal combustion engines. This rating is an indication of its resistance to detonation and its ability to withstand higher compression. The higher. the better. In Russia, Regular-92 or just AI-92 is the fuel of choice. It is the most accessible type of fuel at domestic gas stations and the easiest solution to the problem of “what gas to put in a lawnmower”.

To protect people’s health and the environment, STIHL does not recommend the use of leaded gasoline. This fuel is more toxic than its unleaded cousin, and has been officially banned in Russia since 2003. In other words, any AI-92 fuel sold at gas stations in Russia must be suitable for STIHL products. But there is a catch.

gasoline, lawn, mower, proportion

Most lawnmowers use gasoline. There are also diesel engines, but we do not want to talk about them in this article. At gas stations, petroleum products are sold in the following grades:

The H-80 is no longer offered and is very rare. The octane rating (number after the letters) shows the fuel’s resistance to detonation. The higher the value, the greater the resistance to self-ignition under compression. Gasoline AI-92 is more prone to detonation than AI-95. In the manufacture of lawn mower motors, the manufacturer takes into account the resources of parts and the maximum allowable detonation. The instruction manual for the tool specifies what gasoline to use.

Following the recommendations increases the life of the lawnmower. Gasoline with a lower octane rating than the octane rating given in the gasoline data sheet will quickly cause the piston group to fail. Using fuel with a higher value is also detrimental to the engine. In Russia there is no way to increase the octane number by improving the distillation of oil. That’s why oil refineries add chemical additives to fuel. Detonation resistance increases, and with it, combustion time increases. The result is soot on the spark plugs, rings, cylinders.

How to fill a lawn mower with gasoline and oil

Large lawns near the house require care. The lawnmower can cut the grass quickly, making the area look tidy. But buying a tool is only half the battle. You need to know how to operate the lawnmower, know how to start it correctly, adjust the blades and maintain it.

Reasons a lawn mower may not start

Any machinery requires careful attitude and observance of operating rules. An instrument that seems to be working when checked in a store has stopped starting after being delivered to the house or after several days of operation. Before going to a service center, you can try to solve the problem yourself. The causes of faults on petrol and electric lawnmowers are different.

The gasoline lawnmower may not start for the following reasons:

  • The first thing to do, before starting the engine, is to check the fuel in the tank. A small amount of it will create aeration of the system, but do not fill the tank full to the brim, too. When refueling, the maximum fuel level mark must be adhered to. If the lawnmower is put away for the winter, the fuel has to be drained as petrol tends to evaporate. Filling the lawn with fuel is done with a funnel. Do not start the engine until spilled gasoline has dried out on the mower components, otherwise the fuel may ignite.
  • Often the lawnmower engine does not start because the user does not know how to start it correctly. Before starting, use the lever to set the maximum rpm and then pump gasoline into the carburetor with a primer. Pull the starter cord gently and then pull sharply.
  • after unsuccessful attempts to start the engine it is possible to try to change the spark plug. It is often the cause. If there is no spare spark plug at hand and the old one is covered with heavy soot, clean it with a fine-grained emery paper.
  • Clogging of the air filter leads to bad fuel mixture and the engine starts to choke or does not start at all. You can easily fix the problem by washing the removed filter in clean gasoline and then letting it air dry. The air filters need to be flushed every 25 hours of operation even if the lawnmower does not shut down.
  • Right after the start the engine may stall because of a stuck piston or crankshaft. After unscrewing the spark plug with the starter cord, pump the engine several times. The moving parts may have developed, and the fault may be corrected.
  • Low oil level in the crankcase can cause the engine not to start.

Electric lawn mowers also have their own easily solvable problems:

  • The banal reason that the lawnmower motor does not run, may be the lack of power or low voltage. You can use a screwdriver indicator to find out if there’s current in the mains, but you’ll need a multimeter to measure the voltage.
  • The electric mower is equipped with thermal protection for the engine. Because of the clogged grass vents, the protection will constantly be triggered, preventing the electric motor from working. Solve the problem easily by cleaning the vents.
  • The cause of not working the lawnmower motor can be a faulty switch. Here you will have to go to a service center or replace the broken part yourself.

If none of the above tips did not help to start the unit, you do not need to touch anything else, and it is better to contact the professionals.

The video tells about preparing the lawnmower to start:

What oil to choose and how to put it in your lawnmower

To know what oil your lawnmower needs, you need to know the engine type of the machine. There is a special oil for two-stroke engines that is diluted with petrol in a certain proportion. That is, a fuel mix is prepared. Lawn mowers with four-stroke engines use a different kind of oil and are fed separately from the petrol.

Warning ! The fuel mixture prepared for two-stroke engines may not be stored for more than two weeks and should not be kept in PET bottles. It produces decomposition products that are the cause of soot deposits on the spark plug and in the combustion chamber.

Two-stroke and four-stroke engines are designed differently. Each functioning part requires a specific grease consistency. Which oils you can put in the engine reflects the lawnmower’s operating manual.

You should not give preference to oil solely on the basis of its price. The price depends on the ingredients used. Mineral, semi-synthetic and synthetic oils. 5 to 15% of each is made up of additives. The fluid properties of the oil are defined by the fluid properties of the oil and its ability to keep it flowing at sub-zero temperatures. An oil with a specific viscosity and additives is formulated for each engine type. The oil in four-stroke engines is contaminated by the work of the rubbing parts, so change it every 50 hours.

Tip! In the absence of oil for lawnmowers recommended by the manufacturer choose any other company, but in accordance with the correspondence for the two- or four-stroke engine.

Mixing and priming a two-stroke engine

2-stroke engines do not run on pure gasoline. You have to prepare the fuel mix for them yourself. Only use gasoline with the octane rating recommended by the manufacturer. You don’t have to use the same oil as your lawnmower. Any brand is suitable, as long as it is a product for two-stroke engines.

Any lawnmower manual contains information about the ratio of the components of the fuel mixture, i.e. oil with gasoline. For example, the ratio is 1:35 for mineral oil, but it’s now rarely available for 2-stroke engines. Most often on sale is a synthetic product. To prepare the fuel mixture stick to the ratio of 1:50.

Preparing the fuel mix is quite simple. Pour clean gasoline into a measuring jerry can and use a dispenser to add a certain amount of oil. To finish, just close the canister lid tightly, shake the liquid and the fuel is ready. Simply pour the fuel solution into the tank with a funnel and start the mower.

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It is convenient to use the table for convenient fuel.

Filling up a lawn mower with a four-stroke engine

Many ride-on lawnmowers are equipped with a four-stroke engine. No need to prepare a fuel mix for this mower. Oil is filled into a separate fill hole and placed in the crankcase. The fuel tank should be filled with clean petrol only, after that the mower is ready for use.

The mower’s four-stroke engine does not have an oil filter. Due to the lack of a cleaning mechanism, the oil gets contaminated quickly and needs to be replaced after 50 moto-hours. The whole replacement process is simple. Let the engine idle for about 15 minutes to warm up. The drain hole is on the crankcase. It is sealed with a screw plug. You tilt the mower towards the drain hole, put a container to catch the used oil, and then unscrew the plug. When all the dirty oil has drained out, the plug is closed firmly, the lawnmower is placed on a level surface and new oil is poured through the upper filler plug. The brand 10W40 is usually used for four-stroke engines. Check the level with a dipstick. When the oil level is correct the filler plug is plugged.

This video shows how to change the oil in a lawn mower:

Lawn mower rules from A to Z

Working with any technique requires certain skills and getting used to it. If you haven’t had to deal with the operation of a lawn mower before, it’s best to read the instructions that come with the machine first. It will help to understand the purpose of each lever, then all learned can be consolidated by practice.

Tip! Practice mowing grass, preferably on the lawn, located somewhere behind the house, in a less visible place.

You have to choose an even lawn without pits and bumps. When the lawnmower’s dimensions are well felt, you can start trying to mow grass at different heights and learn to negotiate obstacles.

Work begins with starting the engine

So the lawnmower is filled up with oil and gasoline, nothing leaks anywhere, let’s start the engine for the first test run:

  • The first thing to do before starting the lawnmower engine is to check the position of the speed handle. If the transmission is on, it must be disengaged, otherwise the mower will start moving on its own as soon as the engine starts.
  • With the ignition off, either the starter motor or the cord (depending on the design of the lawnmower) cranks the motor shaft. The choke should be in the open position.
  • The following steps consist of switching on ignition and closing the choke. The starter motor of the lawnmower is started with the push button. If the motor has a winding cord, it must be pulled sharply toward you.
  • If the engine fails to start after several unsuccessful attempts, turn off the ignition, open the choke and perform several idle pumpings to flush the combustion chamber.
  • Having finished with blowing off, repeat the same actions that were done the last time you started the engine.

When the lawn mower engine is successfully started, works monotonously without jerks, set the position with the speed lever to the desired speed and start the movement.

Warning! After starting the motor for the first time, you should not start mowing immediately. A running motor must warm up for at least 5 minutes, otherwise its service life will be reduced.

Grass cutting height adjustment

To achieve the desired height of grass cut, the lawnmower has a special lever that allows raising and lowering the blades of grass. Depending on the model there may be two levers also the number of steps is different. For example, the 7-step adjustment allows you to adjust the cutting height from 20 to 70 mm.

You should take into account that it is easier to mow soft grass with a low position of the blade. For tougher grass, the blades of grass need to be raised and the body of the mower needs to be tilted forward. The inclination of the housing compensates for deflection of the mower when pushing hard on the handle. On front-wheel drive lawnmowers, you do not tilt the body forward, otherwise the machine will leave behind a skip of uncut grass.

Adjust the mower handle to your own height

To make mowing the grass less tiring, the height of the handle has to be adjusted correctly. The handle is optimally positioned 3 cm above the body’s center of gravity. Every person, however, chooses the mower’s handle position individually according to their height and build. There are special screws on the handle for adjustment.

Mowing the grass should be effortless. The lawnmower should move through the lawn by itself, it just needs to be steered. In difficult terrain it is better to switch to a lower gear, and change the direction of movement smoothly by moving the crank left or right. Excessive human effort during operation will quickly wear out the transmission and deform the blade on the ground.

Rules of Mixing

And now about how to mix the components correctly. However, it would be more logical to start by analyzing the common, but completely unacceptable mistakes that many owners of this mower “sin” with. The following steps are considered mistakes when mixing the fuel mixture.

  • Adding oil to fuel that is already in the tank. It is also impossible to obtain a homogeneous fuel mixture. It may work, if only the grass trimmer is pumped for a long time afterwards. But hardly anyone does, considering the seriousness of the device.
  • First pour oil into the mixing tank and then add gasoline. Gasoline has a lower density than oil, so if you pour it into the oil, it will remain in the upper layer, i.e. there will be no natural mixing. Of course, you can mix it later, but it will take much more energy than if it was done the other way around. To pour oil into the filled gasoline.
  • Ignoring accurate measuring devices to get the right amount of ingredients used. In other words, dilute the amount of oil or gasoline by eye. A bad habit in the operation of cars.
  • Taking empty drinking water bottles to make the fuel mixture. Such containers are made of too thin polyethylene, which can dissolve in gasoline.

In view of all the above, we recommend using the following rules when mixing the fuel mixture for two-stroke three-dimensional engines.

  • Use only clean containers made of metal or special plastic for storing gasoline, oil, ready-to-use fuel mixture and its preparation.
  • Use gasoline to fill the dilution tank to avoid spillage, and use a volumetric volume container or a 5 ml and 10 ml medical syringe to add oil.
  • Pour the gasoline into the canister first to make the fuel mixture, and then the oil.
  • To dilute the mixture in the tank, first pour only half of the intended volume of gasoline.
  • Next, add to the gasoline all the amount of oil needed to make the mixture.
  • Stir the contents of the container thoroughly to dilute. It is best to intervene by making circular motions with the container tightly closed. Do not mix fuel inside the canister with any foreign object, as it is not known what material the object is made of, what reaction it may produce with the ingredients of the mixture, how clean it is.
  • Add the remaining gasoline to the mixed mixture and mix thoroughly again.
  • You can fill the fuel tank with the ready mix of the hedge trimmer.

It should be borne in mind that the ready fuel mixture should not be stored for more than 14 days, as it loses its properties, stratifies and evaporates, which leads to a change in proportions and, consequently, the wear of the grass trimmer.

Gasoline engines can be two- and four-stroke. To understand the difference, you need to know two nuances: firstly, that during the work of the engine a number of transients occur, and secondly, that the tact means the movement of the piston from one extreme position to another, and the direction of movement does not matter. The essence of the classification of engines is that the entire cycle of transients in one case is repeated in two strokes, in the other in four.

The differences between 2T and 4T, which relate directly to the threading process, can be understood even without going into the intricacies of the basic units. In a two-stroke engine, the feeding of the air-fuel mixture into the cylinder and the exhaust occurs almost simultaneously. In doing so, the fuel mist initially flows into the crankcase where the crankshaft is located. As the piston moves down, it pushes some of the mixture from this chamber into the work area through a window in the cylinder wall.

In the four-stroke engine, the combustion chamber is separated from the crankcase. The air-fuel mixture is fed through the intake valve, and the exhaust gases are exhausted through the exhaust valve. The valves are controlled by a separate crankshaft-actuated valve unit, and the valve opening and closing sequence is synchronized with the piston stroke. Separation of the working area from the crankcase and the four-stroke combustion system allow complete combustion and near complete elimination of the exhaust gases from the working area before next mixture injection.

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The function of the oil in the lawnmower engine

Gasoline lawnmowers use two- and four-stroke combustion engines. The blades move with the energy of the engine. It arises from the expansion of gases produced by the explosion of gasoline or fuel mixture in the combustion chamber. In this case, the compression of the gases is provided by the movement of the piston.

For the system to work well, there must be a minimum necessary gap between the mating parts. If their size increases due to wear and tear of the working parts, it leads to the deterioration of the engine unit and eventually to its complete inability to start. The problem is that the required ignition pressure for the mixture of fuel and air mixed with atmospheric air is not reached.

Gasoline Remote control robot lawn mower for garden

Engine oil coats engine parts with a thin film, thus slowing down their wear and preventing the appearance of scuffing on the metal surfaces of the mating structural elements. That’s the essential role of oil in a petrol lawnmower’s drive train.

Destruction of units, caused by friction between the parts, does not stop completely, but the use of high-quality materials significantly slows down the process.

In addition to reducing friction between the interacting parts of the internal combustion engine, the use of oil allows:

  • provide better cooling of the drive unit during operation, improving the heat exchange processes between the metal and the atmospheric air;
  • Do the work by operating the motor at maximum speed, which increases the efficiency of labor and leads to a reduction in time costs;
  • Protect the drive mechanism metal from corrosion during winter downtime of the machine.

High-quality oils reduce the negative effects of elevated temperatures on motor parts. By dissipating heat, they increase the unit’s operating time before overheating.

Engine oil is a special material that ensures trouble-free operation of the engine, as well as other systems in the lawnmower. Neglecting its quality leads to various breakdowns of the machine.

Types of engines in gasoline mowers

Before pouring gasoline into the fuel tank, it is important to determine what type of engine is built into the lawnmower. Grass trimmers are available with two-stroke and four-stroke engines. Their fueling and maintenance are significantly different.

grass trimmers with a two-stroke engine

On machines with two-stroke engines, there is no oil supply for the lubrication of the moving parts. Therefore, they must be filled with a mixture of gasoline and motor oil. In any case, you can not use engine oil designed for cars, as it can put the lawnmower out of operation. For this purpose, you need to buy a special oil for two-stroke engines.

Devices with two-stroke engine are filled with gasoline AI-92. They can run on Ai-95 fuel, but in this case the engine can overheat during operation.

Lawn mowers with four-stroke engines

grass trimmers, powered by a four-stroke motor, have a more complex structure, providing separate tanks for gasoline and oil. You can’t use the lubricant used in two-stroke motors in these machines. Gasoline for a petrol mower with this motor can be AI-92 or AI-95. Using fuel with a lower octane rating is not recommended, as it will lead to malfunctions and further malfunctions.

The four-stroke engine is less expensive in terms of gasoline and oil, and produces fewer exhaust fumes.

Proportion 1:50 petrol/oil. Calculation formula: 1:50 1L/501000=20ml. You need 20 ml of oil per liter of gasoline. To measure the right amount of oil in milliliters, use a medical syringe of larger volume, it is inexpensive, sold at any drugstore.

Machinery with two-stroke engines has no oil supply system for lubrication of friction elements. That is why they must be filled with a mixture of petrol and engine oil. Under no circumstances should you use engine oil intended for cars, as it can put the lawnmower out of operation.

What kind of gasoline to put in a lawn mower?

How much petrol to put in the lawnmower? This question often arises in new owners of this equipment. As a rule, this information is presented in the technical documentation of the machine, but it is worth knowing about the possible options.

What gasoline to pour into the lawnmower, depends on the type of engine. It can be a two-stroke or four-stroke. Let’s look at the features of both engines.

To prepare fuel for a two-stroke engine, you will need to mix in strictly defined proportions gasoline and special engine oil. You can buy it without problems in any store of auto parts or garden equipment.

The process of preparing fuel is quite simple: as a rule, for mineral oils, the ratio with gasoline is 1:32. 1:35, for synthetic. 1:50 as advertised on the packaging.

To provide the gasoline lawnmower with fuel for the entire season, it is enough to put it on once. For this, take for example a five-litre jerry can and add 100 ml of oil to it. If you get too little, repeat the procedure all over again.

What kind of petrol to put in a lawn mower with a four-stroke engine?

And now we will tell you what gasoline pour lawnmower with a four-stroke engine, the main difference is the presence of the crankcase. There is oil for engine lubrication, so that the device of this type would work normally, it is enough to fill it only with gasoline. But it has its own special features. Because the technique does not have an oil filter, which means it is not cleaned, change it after about every 50 hours of work.

Checking the oil and gasoline in the lawnmower

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Preparation of fuel mixture for two-stroke engines

This video shows how to prepare fuel mixture for two-stroke engines. Filling mowing machines, chainsaws and.

As for gasoline to fill up the lawnmower, it must not be of a higher grade than recommended by the manufacturer of the equipment. Because the higher the octane rating the longer the fuel burns. And this, in turn, can lead to significant problems and premature tool failure.

It is well known that gasoline is highly flammable and that its vapors are highly explosive. With this in mind, we recommend always following a few simple rules that will ensure the safety of every user:

  • Allow the engine to cool down before refueling.
  • Do not work with fuel if there is an open fire nearby, also do not smoke.
  • To avoid poisoning by exhaust fumes, fueling and starting should be done outdoors or in a well ventilated area.
  • It is not recommended to fill the tank completely, you must be sure to leave room for the “expansion” of gasoline, which always occurs when it heats up.
  • Avoid getting fuel on your clothes and shoes.

In general, the maintenance of gasoline lawnmower engines. a fairly simple matter, which does not require any special knowledge and skills from you. The machines with two-stroke engines need to learn how to prepare the fuel mixture correctly, as well as to clean the air filter in a timely manner. If you have a four-stroke engine, you only need to change the oil and clean the air filter yearly to keep the engine faithful for years to come.

Filling up the 2-stroke motor

Do not use extra virgin gasoline. Make sure you dilute the oil with it. The reason is that the two-stroke motor has no oil reservoir and no oil dispenser. The downside of a 2-stroke motor is that it doesn’t burn enough gasoline. When the engine is running, you can also smell the overheated oil. it also does not completely burn out. Also don’t skimp on oil. If it is deficient, the pistons move back and forth with much friction and braking. As a result, the cylinder and piston shaft will wear out faster.

Mineral oil is poured into the gasoline usually in the ratio of 1: 33.5, and synthetic oil in the ratio of 1: 50. The normal rate for semisynthetic is 1: 42, although it can be adjusted.

For example, fill a liter tank with 980 ml of gasoline and 20 ml of synthetic oil. If you do not have a measuring jug, two 5-litre jugs should use 9,800 ml of petrol (about 10 liters) and 200 ml of oil (one goblet). Overfilling the oil by as little as 10% will cause the engine parts to foul with a layer of soot. Power output will become inefficient and gasoline consumption may increase.

Starting a cold engine

Before starting the lawnmower without transmission heat, the ignition system is turned off and the engine shaft is turned with the starter or starter cord.

Then a series of actions are performed:

If the mower is not running, you will have to do a number of manipulations:

  • The choke remains closed, the ignition is on;
  • The fuel pump (suction) button is pressed about 5 times;
  • Attempted to start the engine.
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How to Use Fuel Stabilizer for Your Lawn Mower

In case of failure, the following must be done:

  • open the bolt to prevent the spark plugs from filling;
  • turn the shaft with the starter motor;
  • blow out the combustion chamber;
  • start the engine.

Sometimes it may take about 15 strokes to start the engine for the first time. this is normal for this equipment.

When the engine starts, the throttle lever is squeezed once for idle use. In addition, the lever is set in the low-turn position. In this position, the engine should warm up for about 5 minutes to. If necessary, it can be stopped by pressing the stop button.

Warning! It is not recommended to work with an unheated engine. it affects its performance and durability.

Refueling technique

What gasoline to use

Gasoline for the lawnmower is suitable for ordinary automobile gasoline, which is sold at all gas stations. Some models are equipped with a motor that runs mainly on diesel, but these are quite few. Usually in the shopping malls are sold gasoline.

The manual of each machine specifies the recommended brand of fuel to fill the gas tank. That’s why it’s important to read the owner’s manual carefully after the purchase. This will save a lot of problems and extend the life of the equipment.

Generally it is recommended to use 92 and 95 octane gasoline for your lawnmower. It happens that it is offered to fill the tank with AI-98 brand.

Further information. The higher the octane rating, the more resistant the gasoline is to detonation. Manufacturers achieve this by adding different chemicals to the fuel. So the flip side of the coin here is that the brands with a high octane rating have a longer combustion time.

Machine manufacturers build machines with parts that have different tendencies to detonate. That’s why each one has its own kind of gasoline. There is no one general recommendation for a motor with a four-stroke engine or two-stroke by brand of gasoline. It all depends on the manufacturer and its advice.

If you neglect the instructions and use fuel stored in the garage, but not suitable for the unit, it will lead to the following malfunctions:

  • The spark plugs, cylinders will become soiled;
  • The piston system will become unusable;
  • The engine will constantly overheat and be unstable;
  • The power of the machine will drop, etc.

How to refuel

It is important not only to understand what fuel to fill the tank, but also how to do it competently. Depending on the type of power plant, the refueling method is selected. There are two types of internal combustion engines:

Each of these have their own specific characteristics. The main difference is in the operating cycle. If the first cycle has two strokes, the second cycle has four. The four-stroke is less expensive in petrol, oil and is more environmentally friendly. This motor element produces fewer exhaust fumes. It is more powerful. In turn, on a small site, you can also use a technique with a two-stroke motor. These models are simpler and less expensive. The grass trimmer, like the lawnmower, has similar types of engines.


In order to fuel this unit, fuel should be prepared. Pure gasoline is not suitable here. It has to be diluted with oil. The fact is that two-stroke engines have no additional oil reservoir, so oil is poured into the engine along with the gasoline.

There has to be enough grease. If you skimp on it, it will be hard for the piston to perform the duty cycle. Eventually, the cylinder and piston wheel will get damaged. This will result in an engine change. If, on the contrary, you pour too much oil, the piston will be covered with carbon deposits and the power of the machine will decrease many times.


Such an engine has a complicated structure. In addition to the tank, there is a special tank for oil. It’s called a crankcase. During operation, fuel and lubricant are fed to the engine in the correct proportions. The advantage of a four-stroke engine is that there is no smell of burning oil, as in a two-stroke engine.

The fuel tank should be filled with pure quality raw materials of the brand intended for the machine. It’s usually gasoline AI-92, AI-95. Fill as needed. There is a mark in the gas tank, up to which the liquid is poured. If there is no need for lubrication, fill the tank with fuel before filling it up. It is important to leave some free space. Otherwise the engine will not work properly.

Mower oil

Choose the right oil for the gardening equipment should take into account the technical characteristics of the machine. The oily fluid is needed so that, once on the assemblies, it spreads in the spaces between the parts and on the parts themselves, allowing them to glide easily. Thus, the wear and tear of machinery will be minimal.

Note! Lawn mower oil with a 2-stroke engine is categorically unsuitable for a machine with a 4-stroke engine. Due to the confusion, you can lose the warranty and break the engine.

According to the characteristics of the oil 4 x tact for lawnmowers must retain its chemical and physical properties for a long time, because it does not burn during the work of the engine, and continues to move in the mechanism. In turn, the oil for a lawnmower with a 2-stroke engine burns with the fuel. That is why its specifications include such a point as the amount of fouling. When using a quality product, the amount of fouling should be minimal.

Important! You should not buy automobile oil. Lubricants for cars and trucks are designed for use in water-cooled machines. Lawn mowers, like snowmobiles and power tillers are air cooled. Because of these differences, manufacturers make their own products for garden equipment. They are air-cooled oriented.

For two-stroke engines

Lubricants are suitable for two-stroke engines:

The packaging must indicate the type of engine for which the product is suitable. Often equipment manufacturers indicate the recommended lubricant varieties in the instructions for use. Manufacturer advises the brand, based on the appropriate viscosity level that is acceptable to the machine.

For four-stroke engines

For four-stroke engines, the oil marked SAE-30, SAE 20w-50, 10W-30 is suitable. These numbers and letters define the oil’s special characteristics, more precisely its viscosity and permissible weather conditions. The first two options are suitable for summertime operation. The third option is preferred for cool off-season conditions. Product labeled 5W30 may be used. It is an all-season fluid. If the internal combustion engine is 4-stroke, the advantage is given to a semi-synthetic or mineral product.

Additional information. Some gardening equipment companies state in the instructions that you should only buy branded oil with the company’s logo on it. Such products are more expensive than conventional products.

Gardeners get confused: which lubricant to buy? Employees of repair services explain that it is not necessary to buy branded oil. Companies that specialize in the production of equipment do not produce their own lubricants. They buy it from specialized suppliers, and then pour it into containers with their labels. So it does not matter what brand name is on the can, the main thing is to buy a product that perfectly matches the parameters of the engine.

Amount of oil per liter of fuel

Two types of engines are installed on gasoline lawnmowers. a four-stroke and a two-stroke. There are essential differences between them. The first variant has a separate oil and gasoline supply, that is, it is not necessary to prepare a special fuel mixture. And the second type of motor requires constant lubrication of engine parts by mixing fuel and oil in a certain proportion.

If you have purchased a grass mowing tool with a two-cycle engine, then you will have to deal with the preparation of the fuel mixture to fuel the mower.

The fuel mixture consists of gasoline and special oil for two-stroke engines. When choosing oil, it is desirable to use a lubricant of the same manufacturer as the lawnmower, but this issue is not a matter of principle.

The main thing is to make sure the oil is of high quality and not a cheap knockoff, in this case you should not skimp.

You can tell the difference between two-stroke engine oil and other oil by the markings on the label. The ratio in which it is necessary to dilute the lubricant with fuel is also indicated on it. With good, quality oils, the dosage is usually: 1 part oil to 50 parts fuel, that is 2% of the total fuel. Some owners get confused about these proportions. It is actually very simple.

If the label says 50: 1, this means 100 grams of oil for 5 liters of gasoline. In other words, for every 1 liter of gasoline, 20 grams of oil must be added to lubricate engines.

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