Author Topic: Castrol gtx 15w 40....  (Read 6434 times)

Offline Khare

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Re: Castrol gtx 15w 40....
« Reply #10 on: 26 February 2010, 19:29 »
I used 15w-40 mineral oil in the mk2 and now use 10w-40 in the mk3. Doesn't really matter what oil you use as long as it's not too thin or else the old seals and worn piston rings will let oil through. 10w-40 is about right for a mk3 golf.