[Lanny]

I broke my flathead in with 20 wt oil, and changed it after 100 miles.

For the 1st 20 minuets, I ran it at about 2,000 RPM, and had a hose
spraying a little cool water on the radiator.

After that, I took it to a tar county road that don't see too much traffic.
I drove it at about 40 mph for 10 miles, then went down to 20 mph for
10 miles.
Then I went up to 55 mph for about 15 miles, then up to 65 mph for
about 15 miles.
Then repeated those same numbers, in the same order, on the trip home.

Changed oil with 20 wt. again, and made the same exact trip one more time.

Changed to 15-40 wt. and been useing that since. That was 5 years ago,
and the old flatty runs pretty darn good.









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