Quote:
Originally Posted by flathead48
Since we are on-the subject of oil, Valvoline VR 1 racing oil use to be a go to oil, does anyone know how it is today for these old flatheads.
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VR-1 is still very good for new builds because the high level of zinc protects the cam while it gets through the initial break-in. Use it straight for the initial run and first oil change.
After that I switched to 1 quart of VR-1 and the rest, any good brand. The reason is that VR-1 is very low on detergent, which you need to prevent the build up of sludge over the long haul.