what syn oil to use?

[Ti Kan]

Al S writes:
> I rebuilt my 1990 Audi 80 non-q 4 cyl engine. Now I want to use synthetic
> oil in it, but I am not sure what grade to run. Castrol  treats it as a 12
> yr old engine and recommends 30w with no syn listed. Mobil =961  doesn=92t =
> know
> either.
> My temps here run from 10-100f and I am thinking of using 0-40. Anyone with
> a suggestion??
> Thanks.

0W-40 is too thin for the older generation VW/Audi engines.  Go with
Mobil-1 15W-50 (red cap) and you should be just fine.

-Ti
2003 A4 1.8T multitronic
2001 S4 biturbo 6-sp
1984 5000S turbo
1980 4000 2.0 5-sp
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