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What grade is CF engine oil?

2 Answers

DelAriana

07/29/25 8:34am

CF engine oil is a medium-grade oil, belonging to the category of diesel engine oils. The classification of diesel engine oil grades is as follows: 'C' represents diesel engine oil, and the sequence from CA, CB, CC, CD, CE, CF, CF-4, CG-4, CH-4, CI-4, to CJ-4 indicates progressively higher oil quality grades. Engine oil is a substance enhanced with additives in base oil, primarily containing anti-wear additives, detergents, dispersants, and multi-grade oil viscosity index improvers. Below are the main criteria for selecting the quality grade of engine lubricating oil: 1. The sum of mechanical and thermal loads on the engine: Expressed by the intensification coefficient based on the total mechanical and thermal loads of the automobile engine. 2. Engine operating conditions: Based on the severity of the engine's operating conditions.

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MacFelicity

08/11/25 6:09pm

I've been driving for over twenty years and have frequently dealt with various types of engine oil. CF is a grade standard for diesel engine oil, belonging to the API classification system, specifically designed for engines that run on high-sulfur diesel. This type of oil is suitable for older diesel vehicles or heavy-duty trucks, as it effectively addresses issues caused by high-sulfur fuel, such as carbon buildup and wear protection. However, it is not suitable for gasoline engines or newer vehicles; using the wrong oil can lead to insufficient lubrication or even engine damage. I remember once using CF oil in my pickup truck, which the manual recommended for this grade, and the vehicle ran smoothly and lasted longer. I suggest checking your vehicle's manual for the specified oil grade and not opting for cheaper oils indiscriminately. Regular oil changes are also crucial to extend your vehicle's lifespan and save on major repair costs. Additionally, the API has higher grades like CJ-4 for modern vehicles, and upgrading can enhance performance. Overall, choosing the right engine oil is like putting the right shoes on your car—comfort ensures a longer run.

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