I have replaced the crank bearings in my engine, and the cylinder will have a fresh hone and new rings. I was planning on just putting a normal 10W-40 motorcycle oil with the required ZDDP back in.....but then I read this on Page 145 of the Clymer manual:
"The mono-grade oils recommend for break in and normal use provide a more superior bedding pattern for the rings and cylinder than do mutli-trade oils. As a result, pistong ring and cylinder bore life are greatly increased."
They also recommend no more than 1/3rd throttle for the first 500 miles and to change the rpm frequently and avoid steady rpm cruising. After 500 miles they allow for more throttle - but suggest that full throttle not be used until after 1,000 miles.
The chart allows 30 weight oil for anything over 60 degrees and 40 weight for anything over 86 degrees. I plan on using 30 weight Valvoline Racing Oil and Lucas ZDDP additive.
Anybody have any reason not to follow this break-in plan?