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Reply to "API CF"

Originally posted by Trajan:
Use what the mfg recommends and move on. No muss. fuss, or worries.

My owners manual 'recommends' 5w-20 mineral oil,synthetic is an option.

Do I go by the "recommend"??? do.......I am running 100% synthetic 5w-50.

Trajen..does your BMW MFG recommend to put tcw3 wally world two stroke oil in the fuel tank of your car at fill up.... you claim to use.

Not everyone who knows what they are doing and does all the research... follows the owners manual exactly in every detail. It's only a guide for the lay person.