MitsuStyle - View Single Post - Which Oil to use on a freshly rebuilt motor?

**Goat Blower** · 10-08-2007

Hmmm, I always use straight 30 weight non-detergent for initial break-in. About 20 miles doing some coast downs to seal the rings, then change the oil and put in my usual stuff, now Valvoline Racing 20w-50 and change at 100 miles and then 500 miles.

10-08-2007	#14
Goat Blower aka Goodbye Asteroids Champion! Beach Squirter Champion! Join Date: Oct 2003 Location: under the car Drives: Taylor Made R15 Posts: 7,765	Re: Which Oil to use on a freshly rebuilt motor? Hmmm, I always use straight 30 weight non-detergent for initial break-in. About 20 miles doing some coast downs to seal the rings, then change the oil and put in my usual stuff, now Valvoline Racing 20w-50 and change at 100 miles and then 500 miles. __________________ 2009 Corvette Z51-SOLD 1992 Mitsubishi Eclipse GSX-SOLD 2013 BMW Z4-Current summer hooptie 2017 GMC Yukon-Current winter hooptie