Two-stroke oil to diesel fuel. Why and how much to add?
Why do diesel car owners add oil to fuel?
The most important and reasonable question: why, in fact, add two-stroke oil for gasoline engines to a four-stroke engine, and even a diesel one? The answer here is quite simple: to improve the lubricity of the fuel.
The fuel system of a diesel engine, regardless of design and manufacturability, always has a high-pressure element. In older engines, this is the injection pump. Modern engines are equipped with pump injectors, in which the plunger pair is installed directly into the injector body.
A plunger pair is a very precisely fitted cylinder and piston. Its main task is to create tremendous pressure for diesel fuel injection into the cylinder. And even a slight wear of the pair leads to the fact that pressure is not created, and the fuel supply to the cylinders stops or occurs incorrectly.
An important element of the fuel system is the injector valve. This is a needle-type part very precisely fitted to the lockable hole, which must withstand enormous pressure and not allow fuel to pass into the cylinder until a control signal is given.
All these loaded and high-precision elements are lubricated only by diesel fuel. The lubricating properties of diesel fuel are not always enough. And a small amount of two-stroke oil improves the lubrication situation, which extends the life of the fuel system components and parts.
Which oil to choose?
There are several rules that must be followed when choosing oil so as not to harm the engine and at the same time not overpay.
- Do not consider JASO FB or API TB oils or below. These lubricants for 2T engines, despite their low cost, are not suitable for a diesel engine, especially equipped with a particulate filter. FB and TB oils do not have a sufficiently low ash content for normal operation in a diesel engine and can create deposits on the parts of the cylinder-piston group or on the surface of the injector nozzles.
- No need to buy oils for boat engines. It doesn't make sense. They are much more expensive than lubricants for conventional two-stroke engines. And in terms of lubricating properties, nothing is better. The high price of this category of lubricants is due to their biodegradation property, which is relevant only for protecting water bodies from pollution.
- Optimal for use in diesel engines are oils of the TC category according to API or FC according to JASO. Today, TC-W lubricants are most common. They can be safely added to diesel fuel.
If there is a choice between expensive boat oil and cheap low-level oil, it is better to take an expensive one or take nothing at all.
Proportions
How much XNUMX-stroke oil to add to diesel fuel? The proportions for mixing are derived only on the basis of the experience of car owners. There are no scientifically substantiated and laboratory-tested data on this issue.
The optimal and guaranteed safe proportion is the interval from 1:400 to 1:1000. That is, for 10 liters of fuel, you can add from 10 to 25 grams of oil. Some motorists make the proportion more saturated, or vice versa, add very little two-stroke lubrication.
It is important to understand that a lack of oil may not give the desired effect. And the excess will cause clogging of the fuel system and parts of the CPG with soot.
Reviews car owners
It is difficult to find negative reviews about the use of two-stroke oil in diesel fuel. Basically, many car owners talk about the same thing:
- the engine runs subjectively softer;
- improved winter start;
- with prolonged use of two-stroke oil, especially if you start using it with a low mileage, the fuel system lasts longer than the average for a particular car model.
Owners of cars with particulate filters note a decrease in soot formation. That is, regeneration occurs less frequently.
In summary, if done right, adding two-stroke oil to diesel fuel will have a positive effect on the engine's fuel system.
