Diluting Gasoline With 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
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.
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.
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.
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.
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.
Rules for pouring the mixture into different engines
All of the above is relevant for two-stroke engines. In the case of four-stroke engines, diluting and mixing nothing is required, gasoline is poured into the fuel tank, and oil into the crankcase. It is important to know that oil intended for a four-stroke engine or for a liquid cooling system cannot be added to a brushcutter with a two-stroke engine.. Otherwise, the entire piston system will be disabled or severe overheating will occur.
Features of refueling brushcutters
Depending on the engine design, brushcutters are divided into two-stroke and four-stroke. In the first case, the piston in an internal combustion engine makes 2 strokes in one working cycle, and in the second case, 4 strokes. Differences in the principle of operation of the engine cause different approaches to refueling the trimmer.
Refueling a brushcutter with a two-stroke engine
In ordinary household models, the brushcutter, as a rule, uses a two-stroke engine. The petrol cutter does not need a lot of power and agility, so it is quite suitable for performing the tasks. In addition, this engine is much cheaper and simpler, but it is fueled with a fuel mixture that consists of oil and gasoline. Such fuel is poured into the carburetor and fed into the cylinder in the form of oil-gasoline mist. Thus, the oil provides lubrication of all the necessary parts, and during the operation of the engine it burns out together with gasoline. However, the combustion of this mixture is accompanied by the release of a pungent odor and smoke, which increases the toxicity of the exhaust gases.
Consequences of filling with a mixture with incorrect proportions
When diluting fuels and lubricants, it is very important to observe the ratio recommended by the brushcutter manufacturer. If there is not enough oil, then scuffs will form on the piston and cylinder, which sooner or later will lead to a breakdown of the piston ring.
And with an excessive amount of oil, coking of the piston ring occurs, as well as the formation of carbon deposits on the piston, on the spark plug, etc. All this leads to heavy wear and tear of equipment and the need for constant cleaning.
Refueling a brushcutter with a four-stroke engine
Four-stroke engines are used in professional brushcutters. They have great power and can work for a long time without interruption and refueling. They also use gasoline and oil as fuel, but they are poured into different tanks. This means that the oil does not participate in the combustion process, so the exhaust gases are not so toxic.
Gasoline selection rules
Before buying fuel for your brushcutter, you need to read the manufacturer’s instructions. It lists the grades and grades of fuel that can be used for a particular trimmer model. In general, when choosing gasoline, you need to focus on the A-92 brand. A-95 is also suitable for refueling brushcutters, although some experts do not recommend taking fuel with such an octane number. This is due to the fact that at many filling stations, such gasoline contains various additives and solvents (for example, alcohol). It should be borne in mind that in this matter you cannot save in order to extend the service life of the brushcutter, you should choose only high-quality fuel from trusted suppliers.
Fuel mixture: the proportion of oil and gasoline for the chainsaw
The chainsaw engine is the heart of the tool, so it is very important to use a properly prepared fuel mixture.
Chainsaw fuel mixture prepared from two compound oil and gasoline. Chainsaws are equipped with two-stroke engines, so oil is not added to the lubrication system (like a four-stroke engine), but directly to gasoline. In this case, it is very important to observe the correct proportions of the ingredients, of course, in no case try to work on pure gasoline, because in this way you will very quickly kill the chainsaw.
If we talk about what kind of gasoline to pour into the chainsaw, then it will be optimal to use fuel with an octane number A-95, in this case, fuel savings can turn out to be deplorable. Often European manufacturers indicate that it is possible to use A-90 or A-92 gasoline, but in post-Soviet countries the quality of gasoline is inferior to that of Europe, so in our realities it is better to use higher quality gasoline.
As for the proportions of petrol-oil mixture, then everything is simple: you need to follow the instructions for the tool. All manufacturers of chainsaws indicate the required ratio in the instruction manual or in the passport of the tool, in addition, the proportions for refueling the chainsaw may differ depending on the model of the chain saw. As a rule, the proportion of oil and gasoline to a chainsaw of famous manufacturers is a ratio of 1:40 or 1:50, which means 1 part of oil for, for example, 40 parts of gasoline. Now arithmetic 1 liter of gasoline = 1000 ml of gasoline, divide by 40 and we get 25ml of oil. If you follow the same steps for the ratio 1:50, then we get 20 ml of oil per 1 liter of gasoline. As for budget chainsaws made in China, the situation is slightly different. The ratio of gasoline to chainsaw oil made in China 1:25, that is, divide 1000 ml of gasoline by 25, we get 40 ml of oil. The thing is that in branded chainsaws, a solid assembly and the distance between pistons and cylinders in the engine is much less than that of Chinese chainsaws, therefore the required amount of oil differs almost twice.
Use a conventional medical syringe with sufficient volume to measure the correct amount of oil.
Another subtlety Fill a dry gasoline can with gasoline first, then oil. The procedure, on the contrary, is fraught with a low quality fuel mixture, because the oil is more dense, it will stick to the bottom of the canister, what a good mixing there is.
Be sure to prepare the fuel mixture in a canister and pour ready-made special fuel into the gas tank! Never cook or mix it directly in the fuel tank of your chainsaw!
If you figured out the question of how to breed gasoline for a chainsaw, then on storage conditions and shelf life of the fuel mixture it is worth saying a few words. It is best and easiest to prepare a petrol-oil mixture for 1 liter of gasoline, it is recommended to do this immediately before working with the tool. Chainsaw fuel tanks have a volume of 0.3 to 1 liter. In the conditions of domestic use, the entire volume of the prepared combustible mixture is rarely used in one session, so the remainder can be saved until the next session. It is necessary to store the fuel mixture in a special canister for gasoline, in a dry, dark place. It is optimal to count that the shelf life of the finished mixture will be 7-10 days. The fact is that the oil on the market now is not synthetic, but organic, that is, natural. After 10 days, all lubricating properties are lost, gasoline simply eats up the oil. Naturally, it is no longer possible to use such fuel, this can cause breakdown and failure of the chainsaw.
At the end of the work, it is necessary to drain the fuel mixture, start the chainsaw, the tool will stall (so that the saw has a dry carburetor) and now you can leave it until the next operation.
Dispose of unsuitable fuel mixture.
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.
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.
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.
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.
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.
For information on the ratio of gasoline and oil required for a petrol cutter, see the following.