Do you run the standard Rotella or the Synthetic?.. and what type of clearances do you have?.. I am guessing you would need a thicker oil than 15W 40 for a High 7 second motor?... 15W40 was the thickest I could find in Rotella At the Wally!..:hammer: And my motor builder wanted me to run 20W 50rotella here on my high 7sec car.
With frequent oil changes and the likelyhood of the engine lasting 100k miles next to nothing.....it works.I know you (Millhouse) have been running turbos for awhile and I'm actually very surprised your using plain regular oil. I was going to use Mobil1 10w 30, but will try that Rotella 15w40.