Quote:
Originally Posted by 1929
I tried to Search it here but was having problems. I have been using Rotella 10w 40, I saw a seminar yesterday on youtube by Antique Engine Rebuilder in Skokie, he says for a rebuilt motor use 5w 30.
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Personally with a completely freshly rebuilt motor, I run a lighter weight oil for the first 50-75 hours for a "break in" period. The lighter oil helps everything seat faster (or so I was taught). But after that I run DMO 15-40 in all my old iron. There are more gents on here with a lot more experience than I with rebuilding A motors, but this is what I've done with several tractor engine rebuilds and they're still running strong after plus 20 years.
Saving iron from the scrap pile one piece at a time