Great thread.
A lot of talk about about oil and oil analysis, but what about the oil filter? Should that be changed the same time as the oil? More or less frequently?
I assume that if the oil analysis comes out good that the filter is still in good condition and doesn't need to be changed until the oil is changed?
The reason I ask is that for my 1992 MR2 Turbo, the manual lists different intervals for the oil and filter:
Severe:
- Oil - 4500kms or 3 months
- Filter - 8000kms or 6 months
Normal:
- Oil - 8000kms or 6 months
- Filter - 16000kms or 12 months