New Oil Grade Now

[marcus1970]

As these cars age do they still run best on 0w 40.

I was thinking it might be time to thicken it up a bit on the next change.

What are you all running?

MB

[kojak]

Too thin. I use carlube 5w 40....may even go up to mobil 1 motorsport. 10w 50 I think.

[ridds]

If you use your car for any track work or high rev driving where the oil gets hot then I'd go for a 50 weight. It will give you much better oil pressure. May loose a touch of performnce but not enough to worry about.

Personally I use a 10w40 Mobil 1 for everyday stuff. Good start protection and thick enough at normal opertaing temps to give the bearings an easy time.