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Tips
Tips

break in engine

NOT synthetic! Brad Penn makes an oil specifically for break-in (high concentration of zddp).
 
I've used Joe Gibbs BR Break-In oil in my last couple rebuilds. I've been happy with the results.
https://www.joegibbsracingoil.com/products/enginebuilder/index.html
Dyno Loyings.jpg
 
I also used Joe Gibbs Break-In oil on my rebuild and was happy with the results (the rings seated etc). They also make a special "Hot-Rod" oil, which in addition to having zinc is supposed to stick to the engine parts better so that there's more oil on the moving parts when you first start the engine. It's made for cars that are not used as a daily driver, and it's supposed to reduce wear during those first few seconds of operation. I used the Break-In Oil for the first 500 miles, and I am using the hot rod oil now, but with only ~1500 miles on the rebuild it's hard to say much...

Keith
 
Whatever oil you choose to use I suggest heating it to do your initial run. I've always done this with the aircraft engines I've built and did it with my BN-2 engine when I built that. 20W-50 Valvoline with extra zddp and heated to about 150 degrees, crank the engine without spark plugs, get your pressure up. 5000 miles later I'm still happy. Knock wood.
 
Thanks. It's an animated GIF. Not difficult to make with photoshop. Feel free to steal mine and change the color to match your car.

Keith
 
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