What Are the Grades of Fully Synthetic Diesel Engine Oil?
2 Answers
Fully synthetic diesel engine oil grades are: ca, cb, cc, cd, ce, cf, cf-4, cg-4, ch-4, ci-4, cj-4. The functions of engine oil are: 1. To alleviate friction and high temperatures; 2. To reduce gas leakage and prevent external pollutants; 3. To prevent contact between water, air, acidic harmful gases, and engine parts; 4. To buffer the pressure rise at the engine cylinder port; 5. To flush away dirt generated on the working surfaces of parts. The steps for changing engine oil are: 1. Lift the vehicle, remove the underbody shield, and place a container of about 10 liters under the oil drain plug; 2. Unscrew the oil drain plug, use an air gun to blow for two minutes at the oil filler port, tighten the oil drain plug after draining, and wipe with a tissue to check for leaks; 3. Reinstall the underbody shield, lower the vehicle, and use a funnel to add new engine oil through the filler port.
Fully synthetic diesel engine oil grades are generally classified according to API or ACEA standards. For example, API CK-4 is quite popular and suitable for modern diesel vehicles, especially low-emission engines. It is specifically designed for turbocharged engines and DPF systems, effectively preventing carbon buildup and wear. I've used CK-4 grade oil before, and I noticed the engine runs quieter at high speeds, with fuel consumption reduced by about 5%. Remember to check your vehicle manual for recommended oil grades—don’t just buy a lower-grade oil to save a little money. For instance, I once tried using regular oil and ended up with a clogged DPF, costing me a fortune in repairs. Regularly changing to fully synthetic oil keeps the car’s performance stable, making driving safer and more worry-free.
