When I built my forged engine I used Millers Competition Running in oil. 1. Run the car upto temp and take for 5 min drive, drop the oil and filter. (Millers CRO) - very steady drive 2. Do 50 miles and drop oil and filter (Millers CRO) - steady drive, not boosting or high rpm. 2. Do 100 miles drop the oil and filter (Millers CRO) - Using abit more power, and let the gears slow you down to bring the rings out. (bed them in better) 3. Do 250 miles drop the oil and filter (Miller CRO) - Using abit more power again, letting the gears slow you down to bring the rings out. (bed them in better) 3. D