[Wayne 962]

Mobil-1 has been reformulated and had a lot of the anti-wear additives removed. I would run one of the older formulations instead (Brad Penn, Swepco). I still have a supply of old Mobil-1 with the old formulation for my own cars. I also think the weight of the oil is less important than frequent oil changes, although I don't like to run 0-wt oil in general. I typically run 10 or 20 wt oil (heavier oils recommended in hotter environments). Change your oil every 3000-5000 miles - way more important than the brand / weight of oil.

Charles (LN Engineering) just recently experimented with some super-light weight oils and cooked his engine as a result, so I would probably stay away from those...

-Wayne