Originally Posted By: SuperDave456
I did the 5 hour thing and change 4x, as I change it hot, and the oil kept coming out looking like silver paint.
All I can say is do shorter OCI's at first, automotive engines are made to a higher standard than Lawn Mower engines.
Right. Dump the break-in oil after 1/2 -1 hr at most, and then take look at all the metallic glitter in the oil.
Air cooled engines need heavy duty straight 30 wt. preferably an HDEO like Shell Rotella, especially in a hot climate as SW Texas, (15w-40 is okay as well). No passenger car oils.
The 15w-50 should do well also as it supposedly has decent ZDDP levels.