I run synthetic. Mobil Delvac 1 5w40. It's a heavy duty diesel oil. Able to go 10K miles between oil changes on this stuff.

IMHO, I think you should stick to synthetic.


P. Valdez

1998 VW Jetta TDI
1.9L I4 direct injection turbo diesel
5 speed manual
no mods, no money

AIM:PackRatTDI

My exhaust smells better than yours.