Proportions Of Trimmer Oil
The choice of oil and gasoline for preparing a fuel mixture for a trimmer: a table of the ratio of dilution What oil and gasoline to choose for refueling a garden trimmer. The proportions of the preparation of the fuel mixture for two-stroke engines of gasoline-powered tools. How to properly and safely refuel brushcutters. Recommendations for the use of a petrol brush, which will help to extend the life of the tool in the household
Which oil to choose
For effective trimmer operation, it is necessary to select oil for two-stroke engines. This is due to the lack of an oil sump in such a device. Depending on the chemical composition of the oil, the following classification is distinguished:
- Mineral based on petroleum distillate, suitable for low-power equipment and with air-type cooling, but requires frequent replacement and can only be used in good weather during the warm season;
- Semi-synthetic suitable for garden equipment with air and liquid cooling;
- Synthetic ones are based on esters, do not require frequent replacement and can be used at any time of the year.
Oil for 2-stroke engines is characterized by good solubility and complete combustion feature. For the trimmer, we recommend using a lubricant that is suitable for air-cooled units. Most often, it is indicated on the packaging that the oil is intended for gardening equipment and is marked TA, TB or TC. And the last one is the most preferable.
If the consumption of engine oil during the summer season is planned to be large due to the presence of a chainsaw, brush cutter, lawn mower in the garden arsenal, then it is advisable to buy 5 liters of oil at a more favorable price. If it is needed only to mix with gasoline and fill the only tool, then 1 liter will be enough.
Often, manufacturers of petrol cutters produce the right oil, so you can make your choice easier if you select a fluid of the appropriate brand.
What gasoline to fill
Gasoline for the trimmer should be chosen unleaded with a stroke number of 92 or 95. As practice shows, AI-80 gasoline can damage the device, which is a questionable economy.
Fuel must be fresh, that is, after purchase, it can be stored for no more than 60 days.
Other factors also affect the quality of the fuel, for example, using a special lubricant for brushcutters and diluting it in a separate container. It is also recommended to use special canisters designed for storing gasoline.
The choice of oil and gasoline for preparing a fuel mixture for a trimmer: dilution ratio table
A trimmer, or a petrol cutter, is an indispensable tool in the household. Over, its reliability, efficiency and long service life depend on many factors. For example, the quality of fuel. This means that you need to select the right trimmer oil, observe the proportions when added to gasoline and the rules for refueling the device.
How to dilute gasoline with trimmer oil
Dilute trimmer gasoline in the correct proportion. An insufficient amount of oil can lead to poor lubrication of the brushcutter elements, which contributes to rapid wear. If the oil is more than the prescribed amount, carbon deposits will form on the pistons and spark plugs. Carbon deposits on the moving parts of the engine interfere with normal operation and lead to early engine damage.
What proportion is required for a particular trimmer model can be found in the attached instructions. Most often, for 2-stroke gasoline engines of mowers, a fuel mixture is used in a ratio of 50: 1, where 50 is part of gasoline, 1 part of oil. That is, 20 ml of oil should be added to 1 liter of gasoline. The table will help you choose the required ratio.
To correctly measure the proportions, use measuring containers with a milliliter scale. For these purposes, a special double-necked canister is perfect; it is designed for mixing and storing oil gasoline. For example, oil can be drawn with a medical syringe without a needle. Before mixing fluids, make sure that the container for the ready-made fuel mixture is free of water, dust and dirt particles.
It is unacceptable to dilute gasoline with lubricant directly in the fuel tank; moreover, the proportion of oil and gasoline must be strictly observed. If you ignore this rule, the trimmer motor can be unstable, due to which it will quickly fail.
It is not recommended to use plastic bottles or canisters for this purpose. This is due to the fact that gasoline tends to dissolve plastic, which means that some of the plastic can get into the fuel tank, which can lead to damage to the carburetor. Although there are special plastic canisters marked “flame”.
This will require:
- Oil suitable for air-cooled two-stroke engines;
- Canister, preferably metal;
- Mixing container, metal is also better;
In addition to protective equipment, do not forget about fire safety rules, because gasoline and engine oil are flammable:
- It is better to carry out work outdoors in order to avoid the accumulation of gasoline vapors in the room;
- Do not smoke and create situations associated with the occurrence of a spark.
Make a mixture of gasoline and oil as follows:
- Pour 1 liter of gasoline into a container, add half the required portion of oil. Mix thoroughly, do it with extreme caution away from sources of open flame.
- Add the rest of the oil to the trimmer gasoline and mix thoroughly again. Fuel can now be added to the trimmer fuel tank.
The mixture can be stored for no more than three months, so it is better to dilute gasoline in such an amount that it is enough for several uses.
How and how much to refuel
Filling the trimmer fuel tank is easy. To do this, place the tank so that the lid is on top. The amount of fuel depends on the trimmer model. This information is indicated in the instructions, there is also a mark directly on the tank.
Doing so can cause fuel to spill into the intake manifold and fuel filter, which could cause engine damage or fuel ignition.
When refueling the trimmer, you must observe safety measures:
- Try to fill in the liquid so that it does not spill, you can use a watering can for this;
- If gasoline still spills, then it must be wiped up immediately;
- The start of the trimmer must be started after the container with the fuel is removed to a safe and secure place, preferably at a distance of more than 10 meters;
- Drain off the remaining fuel during a long break between operations.
Correct proportion and adherence to mixing and filling techniques will help prolong the life of the trimmer. At the same time, it is recommended to choose only a high-quality product of the corresponding brand.
Oil selection and fuel mixture for petrol cutters
So, have you finally become the owner of a petrol brushcutter or lawn mower? And your imagination is already creating images of how you courageously cope with the dense grass. However, the dream of a perfect lawn remains a dream, when the question involuntarily arises: what oil to use and what are the proportions of mixing it with gasoline?
You can find a lot of information on the correct preparation of the fuel mixture on the Internet. This topic is actively discussed on forums and other thematic resources. But, despite such an active discussion, there are many inconsistencies that have to be dealt with.
In fact, it doesn’t matter what technique is used, it can be a lawn mower, a brushcutter or a chain saw, they are united by one two-stroke gasoline engine. Unlike the 4T, it does not have an oil sump. It requires the preparation of a special fuel mixture, consisting of gasoline and oil. The resulting liquid is fed directly to the engine (carburetor). In the process of use, all actively working parts are thoroughly lubricated, contributing to trouble-free operation under all operating conditions.
Lawn Mower Engine Oil
Depending on the chemical composition, lubricants are divided into the following main groups:
Mineral. They are made on the basis of oils obtained from petroleum distillates. They are characterized by high viscosity and require frequent replacement. The material is intended for low power appliances with an air cooling system. Recommended for use in warm weather.
Semi-synthetic. They represent a kind of golden mean. They are based on a mixture of mineral and synthetic oils. A similar lubricant can be used in 2T and 4T engines, gardening and other equipment with air and liquid cooling.
Synthetic. They are made on the basis of special synthetic components containing esters. They are characterized by low viscosity and long service life. Can be used all year round, regardless of temperature conditions. Ideal for demanding, demanding applications with constant variable performance.
Any two-stroke oil, due to its 20% solvent composition, mixes well with fuel and has the feature of complete combustion. Their second characteristic feature is the color, which can be green, red or blue. Of course, this does not mean that some lubricant is better, but some worse. This is done solely so that it is convenient for the user to distinguish oil from pure gasoline.
Classification of engine oils:
The required parameters of oils for 2T engines are prescribed in the requirements of API TC JASO FC, API TC JASO FC ISO GD and API TC JASO FC E-GC. The most widely used classification systems are API. Based on this, 2T engine oils are divided into 4 large groups:
TA. Suitable for household appliances with an air cooling system and an engine volume of no more than 50 cm3.
TB used for more powerful equipment with an air cooling system and a motor volume of 50.200 cm3.
TC. Used in technology with high demands for oil quality. It is a high-quality lubricant for two-stroke engines with a volume of 50.200 cm3. Great for lawn mowers, brushcutters, trimmers, chain saws and other garden equipment.
TD. For outboard boat motors with liquid cooling.
Most suitable material for 2T motors of API-TB and API-TC class. However, it is necessary to refer directly to the product passport, where the manufacturer indicates the brand of engine oil recommended for its equipment.
Important! For brushcutters, lawn mowers and other 2T garden equipment, a special engine oil is provided for two-stroke engines with an air cooling system and a marking for garden equipment. Do not use lubricant for 2T engines with liquid cooling system. Also not recommended for outboard engines, motorcycles and other equipment.
Oil to gasoline ratio for brushcutters: why is accuracy so important?
We all loved to cheat in childhood, so the process of preparing a fuel mixture is not only simple, but also interesting. First of all, it is worth considering the fact that the proportions of the mixture may be different. This depends on engine configuration, oil markings and manufacturer recommendations. The fact is that with an insufficient amount of lubricant, the cylinder and piston heat up, which leads to shallow scuffing of all rubbing surfaces and, consequently, to the failure of the cylinder. Piston group. Well, in the case of its excess, on the contrary, we get coking of the piston ring and the formation of a large amount of carbon deposits.
And even in spite of the fact that there is a generally accepted mixing ratio of 2% (for every liter of gasoline, 20 ml of lubricant). The proportions in the mixture are still recommended to be kept exactly.
How much oil to pour into gasoline for petrol cutters?
Everything is quite simple, with the right balance, the engine runs at full capacity, all parts are thoroughly lubricated and do not wear out. As a result, we get a confidently working technique that will last more than one season.
To know how much oil to add to the brushcutter, you need to familiarize yourself with the performance characteristics of the product. Proportional ratios can be presented in the following form: 1:25, 1:40 and 1:50, which means 1 part of oil for 25, 40 or 50 parts of gasoline.
1 liter of gasoline = 1000 ml
To determine the required amount of oil for a ratio of 1:25, you need 1000/25 and we will get a ratio of 40 ml.
We carry out the same actions for the ratio 1:40 and 1:50:
1:40 (for 1 liter of gasoline 25 ml of oil)
1:50 (for 1 liter of gasoline 20 ml of oil)
In order for the proportion of oil for petrol cutters to be observed correctly, it is recommended to use a special measuring container (not plastic). Eliminate the possibility of dirt and water getting into the fuel mixture. This may affect its quality. It is better to start preparing the mixture with gasoline. Pour it up to the required mark, then add oil. A couple of tilts of the container are sufficient for mixing. The liquid quickly combines and acquires a uniform hue, which, depending on the structure of the oil, can be red, green, blue or other. After that, the properly prepared mixture is poured into the equipment fuel tank.
Before using the equipment, make sure that the tank cap is tightly closed. If you have more fuel, then the remainder can be stored in a special canister or mixing container (no more than 14 days). It is recommended to drain the unused fuel.
Important! Be sure to follow the safety instructions. Mix fluids outdoors to prevent corrosive gasoline fumes from accumulating indoors. Wear gloves and long sleeves. Do not smoke or ignite anything.
Gasoline with an octane rating of AI-92 is considered the most popular fuel for two-stroke engines. Due to its relatively low cost, it is extremely rarely falsified. Therefore, not one hundred percent, but you can be sure of its quality. It is also permissible to use AI-95 fuel.
As for the storage of fuel, its period should not exceed 3 months. Over time, gasoline loses its properties, the resin content becomes higher and a polymerization process occurs, which adversely affects the combustion chamber. The fuel mixture for petrol cutters made of low-quality materials settles in the form of carbon deposits, as a result of which the main components and systems of the engine suffer.
Recommendations for use and storage
The fuel is ready, poured into the fuel tank, the first spurt and the long-awaited start. However, if you want the equipment to work as long as possible, it is recommended to run it in for the first time. To avoid overheating the engine, it is recommended to adhere to the average load. After the main elements of the system have been thoroughly lubricated, the load can be increased.
Certain rules should also be followed when preparing the braid for off-season storage:
Drain the remaining fuel from the fuel tank and carry out the final run until the fuel is completely depleted. Then, pause operation and make sure the engine is completely cool.
Unscrew the spark plug carefully and add about 5 ml of lubricant. Pull the starter handle slowly to distribute the oil evenly inside the engine. Then, return the candle to its original state. Store equipment in a cool dry place.
Ratios of gasoline and oil for the Stihl trimmer
The German manufacturer of high-quality cutting tools Stihl also produces motorized mowers in addition to chainsaws. It is an indispensable tool for mowing grass and lawn trimming, lightweight and mobile.
The brushcutter, or trimmer, also has a two-stroke engine and is fueled with a fuel mixture. For the Stihl trimmer, a ratio of 1:50 is recommended (for 5 liters of gasoline, 100 ml of oil).
How to breed
Stihl saw fuel mixture is prepared by mixing high-octane gasoline and two-stroke engine oil. The proportion of oil and gasoline for a chainsaw is as follows: if the power of the unit does not exceed 1.5 kW, then the ratio will be 1:40 (i.E. 25 ml of oil per liter of gasoline), and with a power higher than this value, 1:50 (20 ml per 1 l).
Looking at the table of proportions, we will analyze, using the example of two saws of different power, how to mix oil gasoline.
- For the low-power STIHL MS 180 with a 2-stroke engine, the dilution will be 1:40. The volume of the fuel tank is only 0.25 liters. In order to mix fuel and oil for one filling, we need 6.25 ml of oil for 0.25 liters of gasoline.
- For the STIHL MS 660 heavy-duty professional chainsaw, dilute oil and gasoline in a ratio of 1:50. This model has a fuel tank capacity of 0.825 l. In order to understand how much oil to pour for such a volume of gasoline, multiply 0.825 by 20. It turns out that 16.5 ml of engine oil is required.
In practice, of course, it is not necessary to calculate how much of the lubricant will be diluted in the volume of gasoline per filling. Usually, the fuel mixture is diluted in a volume of 1-2 liters, which is enough for several refueling of the chain saw.
You need to dilute gasoline for the Stihl chainsaw in a separate canister, in no case pouring the components into the saw’s gas tank separately. These engines do not have an oil pump and the possibility of installing it, so only ready-made fuel is poured into the tank. There are even special canisters with two necks on sale to make it easier to dilute the mixture, but you can add oil to gasoline for a chainsaw and in an ordinary canister.
It is better to observe the proportions of refueling the chainsaw as accurately as possible: excess oil will create carbon deposits on the spark plugs and pistons and provoke detonation during fuel combustion. This can shorten the engine life. In addition, the user of the saw in this case is forced to inhale the exhaust gases with unburned fractions. At the same time, excess gasoline can damage pistons due to insufficient lubrication.
Some craftsmen, in the absence of special measuring accessories, advise using a plastic bottle: a full cap (from the same bottle) of oil is poured into a half-liter container filled with gasoline. The output is approximately 1:50.
It is better to calculate the amount of mixture for refueling in advance based on the expected amount of work and the declared consumption of this engine. The volume of the tank in most chainsaws is about 0.5 liters, a 2 kW engine will consume about 1.2 liters per hour of operation (for more precise characteristics of the saw, see the instructions). Thus, it makes no sense to prepare a mixture in quantities exceeding 3 fillings in a row.
Before starting the preparation of the mixture, it is recommended to thoroughly clean and dry the neck of the canister and the area around it in order to avoid the ingress of impurities: dust, water, etc. The same is done with the tank before filling the fuel: the cap and neck are cleaned of dust and adhering dirt, so that it does not get into the gas tank, and then into the engine.
The first question that the user faces before starting work is what gasoline to pour into the Stihl chainsaw.
Gasoline for the Stihl chainsaw is filled exclusively with unleaded high-octane gasoline, that is, with an octane number higher than 90. If you fill it with low-octane gasoline, it is fraught with engine overheating, piston seizure and engine failure. Therefore, it is optimal to pour AI-92 or AI-95 gasoline into the chainsaw, but here the question of fuel quality arises.
Poor-quality AI-92 may not reach the declared octane number, and AI-95 often contains many additives that do not bring any benefit to the engine. In addition, if the additives are of poor quality, they do not last long, and after a few days, the purchased fuel can turn into a low-octane fuel, which is not suitable for a chainsaw engine.
At the same time, a good 95 can damage the piston system and burn it. Thus, some users have found a way out: to fill the chainsaw with AI-92 gasoline mixed with AI-95. This achieves an optimal balance between the octane number and the amount of additives.
Unlike four-stroke engines, Stihl 180 chainsaw oil is poured directly into the gas tank, after being mixed with gasoline. It is recommended to fill the chainsaw with the oil specified in the instructions for this model.
It can significantly reduce the life of the engine, and if traces of such a substance are found in the cylinder-piston group, the tool will be considered withdrawn from the warranty, i.E., it will not be subject to warranty repair or exchange.
Stihl synthetic and mineral oils for chainsaws are sold in bottles or cans of different capacities: from 100 ml to 5 liters. Mineral ones have a lower cost, while semi-synthetic and synthetic ones provide complete combustion during engine operation, i.E., no carbon deposits and a minimum of toxic compounds in the exhaust.
In addition, synthetic oils retain their properties over a much wider temperature range, and also contain special additives that are useful for engine operation: antioxidant, detergent, preservative, etc.
You can choose an engine oil for your tasks depending on the saw model and the frequency of its use: the oil consumption during the operation of the device is low, and given the shelf life of semi-synthetic and mineral lubricants, there is a risk of simply not having time to use even a liter bottle to the end.
So with a small estimated volume of work, you can not buy a bulk canister, but limit yourself to a bottle. Only Stihl mineral greases do not have an expiration date.
What gasoline and oil is best for refueling a Stihl chainsaw: a table of ratios, how to breed, proportions
The durability and reliability of a chainsaw is determined not only by the conditions of its operation, but also by the quality of the fuel used for refueling. In addition to the special conditions of use when lapping parts in the first few refuelings, attention must also be paid to the quality of the fuel mixture.
Stihl professional chainsaws are equipped with two-stroke engines that require high-quality fuel with a metered mixture of high-octane gasoline and oil, designed for engine operation at high speeds. The correct choice of gasoline and oil for the Stihl chainsaw is the key to a long and successful operation of this unit.
Stihl produces its own oil for its tools. High quality Stihl 2-stroke oil has a high lubricity.
Consider a table of assortment of oils for chainsaws from the official Stihl website.
Here we see two types of motor oils:
- Mineral base,
- Has a shelf life of 4 years,
- Minimum application temperature:.10 C
- Available in volumes from 20 ml to 55 liters.
- Has a shelf life of 4 years,
- Burns out completely in the piston group,
- Biologically safe and degrades more than 80% in 21 days,
- Low smoke,
- Minimum application temperature:.25 C
- Available in 100 ml and 1 liter volumes.
The manufacturer also suggests in the description for lubricants how to dilute the mixture for refueling the saw in a ratio of 1:50.
Consequences of violation of the ratio
The service life of the motor scooter engine depends on how accurately you follow the manufacturer’s recommended oil-gasoline ratio. The fact is that the fuel mixture enters the cylinders in the form of gasoline-oil mist. And the task of the oil composition is to lubricate the moving and rubbing parts and surfaces of various parts in the cylinder. If it suddenly turns out that there is not enough oil, and somewhere it will not be enough at all, the parts that touch dry will begin to damage each other. As a result, scuffs, scratches and chips are formed, which will certainly lead to complete or partial engine failure (for example, it can jam).
In the opposite case, when too much oil enters the engine, it does not have time to completely burn out, settling on the cylinder walls and turning over time into solid particles, coke, slag and the like. As you might guess, this also leads to engine failure. The most important thing is that even a single violation of the proportion in the direction of a lack of oil should not be allowed. It is better to pour a little oil 10 times than not to add just 1 time. It often happens that this time is quite enough to break the engine.
First of all, it is necessary to take into account the information that the manufacturer recommends, since in the event of a failure of the brushcutter, you can present your claims to him, and not to a third-party source. If there is no instruction in the passport, and even more so if there is no passport, we recommend that you look for another trimmer model from a more reliable seller.
For all other cases, when you have a petrol cutter model in your hands and there is no way to find out its technical features, there are standard proportions of the most probable components of the fuel mixture for a two-stroke engine. Basically, these units use AI-92 gasoline and a special synthetic oil, which contains a solvent for better mixing with fuel. This oil evaporates slowly and has the ability to completely burn out in the cylinder, leaving no carbon deposits.
The standard ratio of synthetic oil to gasoline is 1: 50. This means that 5 liters of gasoline need 100 ml of oil, and in accordance with this oil consumption per 1 liter of gasoline is 20 ml. Knowing the amount of oil required to dilute 1 liter of fuel, you can easily calculate any rates when preparing fuel for the trimmer. When using mineral oils, the ratio of 1: 40 is most often standard. Therefore, 1 liter of fuel will require 25 ml of such oil, and 125 ml for a 5 liter canister.
When working with petrol cutters, a person with little experience in operating such equipment will not be difficult to determine and adjust the actual amount of oil required for a particular model. You should only pay attention to the exhaust gases (their color, odor toxicity), cycle stability, engine heating and developed power. Details about the consequences of incorrect mixing proportions of gasoline and oil can be expected in another section of the article. There are options for brushcutters running on AI-95 gasoline. This should also be considered.
The ratio of gasoline and oil for brushcutters
- Standard proportions
- Mixing rules
- Consequences of violation of the ratio
- How to choose for petrol cutters?
Gas cutters are a fairly common technique for combating weeds in summer cottages, in household, road and housing and communal services. These devices have two more names for trimmer and brushcutter. These units differ in their engines. The more expensive ones have four-stroke engines, all others have two-stroke engines. Of course, the latter are the most popular among the population, since they are simpler in design, and lighter in weight, and much cheaper than their four-stroke competitors. However, two-stroke models are inconvenient in that the fuel mixture for them must be prepared by hand, maintaining a strict dosage between gasoline and oil. In four-stroke analogs, the mixing of these components occurs automatically, you only need to fill the gas tank and oil tank with the corresponding substances. Let’s consider the question of the correctness of refueling exactly two-stroke brushcutters, since it depends on how effective and long the operation of such a unit will be.
And now about how to mix the components correctly. However, it would be more logical to start with an analysis of common, but absolutely unacceptable mistakes that many owners of this mowing unit sin with. The following actions are considered as mixing errors.
- Adding oil to the fuel already poured into the brushcutter’s gas tank. In this way, a homogeneous fuel mixture cannot be obtained. Perhaps it will work, if only then shake the trimmer for a long time. But it is unlikely that someone will do this, given the severity of the unit.
- First pour oil into a mixing container, and then add gasoline to it. Gasoline has a lower density than oil, so if it is poured into oil, it will remain in the upper layer, that is, natural mixing will not occur. Of course, it will be possible to mix later, but it will take much more energy than if it were done the other way around, pouring oil into the filled gasoline.
- Ignoring precise measuring instruments for taking the required quantities of ingredients used. In other words, diluting the amount of oil or gasoline by eye is a bad habit when operating motor vehicles.
- Take empty drinking water bottles for preparation of the fuel mixture. Such containers are made of too thin polyethylene, which can dissolve with gasoline.
Considering all of the above, we recommend using the following rules when mixing a fuel mixture for two-stroke trimmer engines.
- Use only clean containers made of metal or special plastic for storing gasoline, oil, ready-made fuel mixture and its preparation.
- Use a watering can for filling gasoline into a dilution container to avoid spilling, and for adding oil in a measuring container with volume risks or a medical syringe for 5 and 10 ml.
- First, pour gasoline into the canister for preparing the fuel mixture, and then oil.
- To dilute the mixture, first pour only half of the planned volume of gasoline into the container.
- Next, add to the gasoline the entire amount of oil required to prepare the mixture.
- Mix the contents of the dilution container thoroughly. It is best to stir by making circular movements with a tightly closed container. You should not stir the fuel inside the canister with any foreign object, since it is not known what material this object is made of, what reaction it can enter into with the ingredients of the mixture, how clean it is.
- Add the rest of the gasoline to the mixed mixture and mix thoroughly again.
- You can fill the fuel tank with the prepared mixture.
It must be borne in mind that the ready-made fuel mixture should not be stored for more than 14 days, as it loses its properties, stratifies and evaporates, which leads to changes in proportions, and hence a deterioration in trimmer performance.
How to choose for petrol cutters?
For two-stroke engines, brushcutters use AI-92 or AI-95 gasoline. Most often the first of those named. There is always information about this in the technical data sheet of the product. If, for some reason, it is not known exactly on what gasoline the trimmer should work, you can pick it up by testing both brands of gasoline in action. Global changes in the engine will not happen from this, and it is quite possible to determine which gasoline this or that model of the unit loves more, for some factors. This will be shown by the developed power, and throttle response, and engine heating, as well as its stable operation at all revolutions.
But it is much more difficult to determine the proportions of oil to a certain volume of gasoline. In this case, you need to know at least something about the manufacturer of the equipment. And already according to the standard proportions for this manufacturer, select the proportion for a specific model, taking into account the type of oil.
For example, for Chinese low power trimmers, two ratios are mainly used 1: 25 or 1: 32. The first is for mineral oils and the second is for synthetic oils. We have already talked about the choice of standard proportions for petrol cutters of European and American manufacturers in connection with the type of oil. According to the class of oils for household trimmers, you need to use TB oil according to the API classification. For more powerful class vehicles.