Re: Oil recommendations
> Anyone recommend an oil for a 1972 351C-4V? I know the oiling system
> is poor to begin with. It is only for summer driving in Chicago
> 40F). I was thinking either 10W-40 or 20W-50? Any recommendations?
> How about synthetic or conventional?
Is it really only 40F in the summer in Chicago? If it's that cool, I
would use a 10W. 20W is too thick for cold starts in cool/cold
weather. And 10W-40 has more additives to get that wider viscosity
split, and more additives means less oil/lubricant. So, I'd go with a
As for synthetic or conventional, go with what's more important to you.
If the motor is really solid, then it's probably worth the extra bucks
to dump in synthetic. But if the motor has some miles on it and will
probably need a rebuild in the near future, then don't waste the extra
cash, use conventional. If it's just an average decent motor, but
nothing great, then mix a couple quarts of synthetic in with the
conventional to save a few bucks.