Yeah, I was pretty disappointed upon seeing the scoring, so soon after having worked on the engine!
I was running regular 30 weight oil in it at the time, mono grade because that is often advised for engine break in. Usually I use either that or a Penrite 10W-30 semi-synthetic oil designed for small engines which is available at a good price locally.
I agree I could probably leave it, it still seems to run fine. I will keep those PTFE based additives such as the Nulon one you mentioned in mind, I might try that if it starts burning more oil or losing power. Definitely worth a try before tearing into an otherwise OK engine.
I recently came into possession of an old running 18HP B&S Vanguard V-Twin engine which will be used on the Greenfield this engine was on, so this engine may actually end up going on another machine where it sees less demanding use, and the scoring would be less of a concern there I think.
RLP
Last edited by RLP; 01/07/19 07:56 PM. Reason: Grammar
