Any Synthetic Oil Users Here?

[Capthead]

They don't allow the parts to wear in (break in). That's what most have found. Fossil oils do so I'd pick one and use it for the break in period.

 

[Nomad Willy]

Art, Capthead,
It was standard procedure for ultralight aircraft to break-in on Dino and then switch to synthetic. It was said that w syn break-in wouldn't happen as not enough wear would take place using syn for break-in. Could have been a wife's tale but I always did it. I used a motorcycle racing syn oil after break-in that was so viscous it wouldn't flow in oil injection systems that were very popular on motorcycles and other two stroke engines.

May be the same in a car or old trawler engine. I don't know.

By the way I said I saw a Lehman at Harbor Marine (where I'm he added now) for $15K ... But that's w a core or trade-in.

 

[Art]

They don't allow the parts to wear in (break in). That's what most have found. Fossil oils do so I'd pick one and use it for the break in period.

I was thinking along those lines. Will follow best recommendations by the expert machinist currently rebuilding my 430 cid high performance engine's block. He's been at it for decades!