> For the first time, should I put some Mobil 1 15w50 or
> should I put something lighter and non synthetic? The
> temperature should be in the 40s at the lowest now and
> 50s during the day and before you know it, it's going
> to be in the 60s, if that makes any difference.
>
> Note that I haven't touched the crank nor the conrod
> bearings. Just new rings, one new piston.
You MUST break new rings in with plain oil. Synthetic is too slippery for
them to seat. Don't switch to syn until 2000+ miles.
-Jim