As cars, buses and other gasoline engine vehicles often drive in the city, and the engine often runs at idle speed due to road congestion, the temperature is low. Even under normal operating conditions, the temperature and pressure of the gasoline engine are lower than those of the diesel engine. Therefore, under the working conditions of the gasoline engine, the engine oil is prone to produce low-temperature sludge, so the gasoline engine oil is required to have good low-temperature sludge dispersion; Diesel engine vehicles often drive on the highway. The vehicle runs for a long time, and the engine temperature and pressure are high. More soot and carbon deposits are generated in the cylinder. The engine oil is also easy to oxidize to produce gum. Therefore, the diesel engine oil is required to have good high temperature detergency. This is not recommended if it is not very urgent. Gasoline engines and diesel engines have different requirements for engine oil. Generally speaking, compared with diesel engine oil, gasoline engine oil of the same grade has a higher viscosity and contains more detergent dispersants, antioxidants, anti-corrosion additives, etc.
How about adding gasoline engine oil to the diesel engine?
Due to the high working pressure of diesel engine, the requirements for the oil film strength of the friction pair surface are also high, while the viscosity of gasoline engine oil is low, which cannot meet the lubrication requirements, and the friction pairs will increase wear. In addition, the clearance between various parts of the diesel engine is relatively large, and the low viscosity gasoline engine oil can not seal the clearance of the cylinder wall very well. The crankcase will have more gas leakage, and the engine power will be reduced. In addition, there are more corrosive substances in the products generated after the combustion of the diesel engine, which will quickly neutralize the detergent dispersant in the gasoline engine oil. The engine oil will soon become invalid, and the connecting rod pads and crankshaft bearing pads will wear or even peel off prematurely. The service life of the engine will be greatly shortened.
This is also not possible. The working load of gasoline engine is relatively small, the thermal efficiency is lower than that of diesel engine, the overall workmanship is relatively precise, and the fit clearance between various parts is small. Therefore, the engine oil needs to have better viscosity temperature characteristics and fluidity, and the engine oil needs to have less residue after combustion, while the diesel engine oil does not have the above capabilities. If the diesel engine oil is added to the gasoline engine, the engine will have difficulties in starting, weak acceleration, high fuel consumption, early engine wear, high temperature and other failures, and the exhaust emissions will exceed the standard, and the three-way catalytic system will be damaged prematurely.
The above is a detailed introduction to the long-acting diesel engine oil, and I hope it will be helpful to you. If you have any questions, please contact us. We will provide services for you with our attitude https://www.smxnykj.com/