SORRY
SORRY
Sorry, I got the two procedures mixed up, (like that hasn't happened before!) Perhaps I (or anyone who really needs advice on engines) needs to go to the real source of GOOD info- Clarence Lee of RCM and K.B. engine fame.- did I mention I was a dyslexic?
Whatever your proceedure for breaking(in) engines, I have broken(in) and run, and STILL HAVE most of the following- a K&B Sportster- .28, .45, .65, An Irvine .40 ABC, Two .60 Super Tigres, (ringed) a .61 ST ABC, Two .40 ST, an O.S. LA .40, an O.S. FP .40, an O.S. .40/with a Davis diesel head, a .25 O.S FP, a Mars .15 Diesel, .049 Norvel, .40 Enya, A couple of Blackhead McCoy's from the '60's, Maybe a dozen Cox products, and, finally, a TT .52 FOURSTROKE.
I HAVE ALWAYS USED 10% FUEL, WITH CASTOR ADDED TO BRING THE OIL LEVEL TO 24%, with the exception of the diesels, AND, the Cox/Norvel clan.
I have NEVER worn out any of these, and yes, they are all or have all been run A LOT! ( I have all the time in the world, and am blessed with being able to live what most modelers would concider the "dream life")- A drunk driver ran into me, disabled me and, as a result made me very wealthy. I don't recommend getting rich this way, but I did. Enough said.
Guess I'll never make "Senior Member" this way!
Have fun and, fly for life.

Jetts