QUOTE(ry8128 @ Dec 9 2024, 12:43 AM)
What is the recommended 4T oil change interval for mineral and fully synthetic? Is it 1k for mineral and 5k for fully?
It also depends on how much crankcase capacity for oil.
Oil doesn't necessary degrade that much. It's the additives and contamination that usually the reason to change oil.
The more oil you have, the longer the OCI can be.
My 800NK has a factory OCI of a ridiculous 15k on fully synth. But I change by 8-10k.
My dominar's OCI is 4500 on mineral oil, I'm using fully synth but I change about the same time also, around 5k so there is a little more headroom if I can't make the service on time.
It also depends on how clean running your engine is. On a worn out engine, the oil gets contaminated by blowby and this may need more frequent oil changes.
On a daily driven kapchai unless you are full throttling it everyday, fully should be good for 3k, given you only have 1L of oil in your engine.