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Ok, the oil was 20w50 gtx and has a bottle of restorer in it. Thanks for the comments!

Hi there! Brand new guy, kinda new at the UOA stuff, and I probably did it wrong. This is a rebuilt b25 BMW (1996). Customer brought to me to tune (dyno - efi), and it was being odd. Basically, wets the plugs easy, inconstant cold compression, slow crank when warm and so on. It had idle time on...