Pete Lech

I read in various threads that it is oil escaping past the exhaust guides that is causing the build-up.

I am wondering if using 15-50 oil instead of 0-40 would make a difference, as less oil would escape past the valve guides?

Bill P.

Hi Pete,

In threads of long past, it was the consensus that in our climate the 15/50 was a good call. I've put over 75k on my last 993 with no issues at all. You drive your car as it was intended and I doubt you will have problems. I run a can or two of Lubro Molyh's Ventil Sauber valve cleaner before oil changes too.

Good seeing you Saturday,

Bill

Rob 97 993c2

do twinturbos have the carbon buildup issue?
Seems like i only hear of it on NA cars.
why would it be different?
=r