My Mk6 Golf is set to longlife services, but being a bit 'old school' i just cannot agree with 18,000 miles or well over a year between oli changes.
So at about 9-10 k miles from a service, out comes the trusty Pela extractor, and the oil is swapped.
Thing is the oil going in was mostly Carlube triple R, but I also added the remainder of a can of Comma prolife & a little bit of Castrol SLX that was leftover. All fully synthetic VW spec of course.
I don't believe there is any real problem in mixing oils of the same basic spec, and surely new oil is better for the engine than the old that comes out tar black.
Or am i just wasting ££££'s ?
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