Time for an oil change for my 1.8T - it's getting on a bit (145,000 mls) and I'm getting tight, so rather than Halfords synthetic at £43, I noticed that their fully synthetic motorcycle oil 5W40 SL A3 is only £32. Used to be motorcycle oil was more expensive but not this time. Considering it's designed for comparatively much higher tuned engines I wonder if I can use it in my old gti.
Thoughts?