I went eighteen straight rounds, double drivin the same car which you can do at some big bracket races, in 95 degree weather with less than ten minutes in between the later rounds to run myself in the final. The oil pressure never dropped below 60 pounds, which to me is amazing considering it had 65 poundswhen i crank the motor cold to warm it up. This is also some of the slickest stuff I have ever seen. It also has actually helped make my car more consistent. Since switching to the Lucas Oil Synthetic 20-50 two weeks ago, I have been in four finals and have won a total of 13,000 dollars. Wheter your competing in one of the many sportsman categories or your brutalizing your engine lap after lap like I do at the big dollar bracket races, If you want peace of mind about the life of your engine and the confidence to crank your car and win the next round i highly recommend this oil.