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Re: Engine oil for K100 on Sat Mar 01, 2014 10:43 pm
92KK 84WW Olaf
Life time member

25 W 60 is way too thick for the engine. The oil pump will pump it but the engine needs a thinner oil. Get it out fast and put back in the thinner oil. An oil that's too thick will starve the bearing surfaces of oil. K engines are built to good tolerances. Even in a hot climate you would never use one of those oils. The knock is most likely before the oil pressure builds up on the bearings and possibly the tensioner.