Oil additives

ValiantRacing said
What was his thought on full groove main bearings?

We went there because he was wondering why I was even using them. It changed what I used for an oil ring.

You are putting at least double the oil on the cylinder walls because oil is going to the rods full time rather than just half the time.

IIRC I ended up with a 15 pound oil ring rather than a 12 pounder just to help get that extra oil off the cylinder walls.

And he suggested a Napier second ring which I wanted anyway because of what it does better than a conventional second ring.