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This topic comes up a lot.

I'm no expert but I'd recommend Rotella T or Delo 400 LE. Both have fairly high levels of zinc to protect a flat tappet cam and are easy to find and not expensive.

I run it, my dad runs it, many here run this diesel oil no problems.

I personally think race oil would be money out the window for your engine. It sounds fairly mild. Even fairly wild engines are getting by with cheap diesel oil.



Me too in a low deck stroker. Rotella T 15W40 gives me good oil pressure at hot idle and handles the moderately cool temps (mid 20's) I occasionally encounter in 3 season driving. I usually get it at Walmart.