her's a question i'm wondering about ...
my minarelli v1 engine manual recommends 20-weight non-detergent oil for the clutch casing. but since it's so scarce, we've been using 30-weight non-detergent oil.
anyone know of some good 20-weight non-detergent oils? or a list of 30-weight non-detergents. i'd especially like a nice type (e.g. valvoline, penzoil). that'd be great. thanks!