Categories: Auto

Oil change interval in a diesel engine

The diesel engine differs in a number of features in comparison with gasoline analogs, resulting in increased requirements for the quality of diesel engine oil. The intervals of oil change in diesel are affected by the quality of diesel fuel, as well as the operating conditions of a particular power unit.

We also recommend reading the article about it, why oils for diesel internal combustion engines differ in composition compared to oils for gasoline engines. In this article you will learn about the features and requirements for motor oil for diesel engines.

Modern diesel engines use oils, class not lower than B2 for ACEA (CD by API). In terms of viscosity, selection is carried out according to specifications of the manufacturer of this or that internal combustion engine. Universal synthetic and semi-synthetic oils with an index of 5W40 and 10W40 are most widely used for diesel. Additionally, you need to consider the type of oil used (mineral, semi-synthetic and synthetic oils) and strictly adhere to the recommended replacement interval.

Why diesel oil needs to be changed more often

The life of a diesel engine depends on the right engine oil and compliance with the recommendations, which are specified in the operation manual. According to the instructions for Europe, oil change in the diesel engine is carried out every 10 thousand. kilometers traveled, and on gasoline engines the term of planned replacement allows driving close 20 thousand. km.

It should be considered separately, that diesel and gasoline in developed countries are much better than diesel fuel in the CIS. In domestic DT more sulfur and other unwanted impurities, which causes rapid oxidation and aging of engine oil. For this reason, in the dealer service centers, regular replacement is recommended for everyone 10 000 km for gasoline engines and each 7 500 km. for diesel engines. When operating the car in difficult conditions (transportation of goods by heavy equipment, the presence of a loaded trailer in cars, short distance travel, easy in traffic jams, etc.. P.) this interval for diesel is reduced to 5 thousand. kilometers traveled.

It is a mistake to believe, that the operation of modern turbodiesels on synthetic and semi-synthetic oils means, that the replacement interval compared to driving on cheaper mineral oils can be significantly increased.

Synthetics and semi-synthetics are different, that are able to maintain optimal characteristics and properties longer. Such oils are more effective in protecting the engine from wear and tear during a certain service life, but this term is still limited. It turns out, the use of expensive synthetics provides better performance, but does not allow to go on the specified oil without replacement longer than usual.

As for Longlife oils with a prolonged replacement interval, as well as universal oils with the possibility of simultaneous use in gasoline and diesel engines, then these products were originally designed with the use of quality diesel fuel in line with European standards. In the CIS, when driving on these oils, you must follow the general recommendations, regardless of the type of oil, its features and unique properties.

We also recommend reading the article on choosing a lubricant for a diesel engine. In this article you will be able to learn about the basic requirements, parameters, tolerances and recommendations for the selection of diesel engine oil.

Якщо довго не міняти масло у дизельному двигуні: effects

As already mentioned, the quality of diesel fuel and certain operating conditions directly affect the life of motor oil. In that case, if you do not change the oil in a timely manner, застаріле масло накопичує в собі частинки пилу і бруду.

Additives in oil tend to disintegrate over time, which leads to the loss of the ability to effectively lubricate and protect against wear friction surfaces, reduced detergency.

In critical cases, there is a complete blockage of the oil channels of the lubrication system and the entire engine with dirty and thickened oil, which leads to serious damage to the power unit. For a diesel engine, this means extremely expensive repairs.

Tips

During operation of the diesel engine it is recommended to use oil of one brand corresponding to all tolerances, which was originally designed for a diesel engine (is not universal). In addition to changing the engine oil, the oil filter of the engine lubrication system must be changed.
Rapid darkening and even blackening of engine oil after its replacement directly indicates the active action of dispersing and washing additives, which must be part of it. Color change does not mean, that the oil has lost its properties.
Constant driving on oil of the same type and manufacturer eliminates the possibility of interaction of the remnants of old oil with fresh and the formation of insoluble deposits in the engine. It turns out, the need to flush the diesel engine before changing the oil becomes much less relevant.
To insure yourself against the purchase of counterfeits, buy engine oil only from an official dealer or official outlets.

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