the lube techs put in PP 5-30 instead of a syn 5-40 ...my sis owns it and for some reason she changed her oil this week which is a rare occurence, i can see crud under oil cap at 85k... VIP also used a oil system cleaner for xtra 8$ whatever that is...i think for 66$ they should at least put in right grade...any thoughts on running 5-30 and on oil system cleaner wuld be appreciated...VIP says they always use this on passats