my only guess is that it absorbs heat better and moves it through the coolers quicker. I am running about 15 quarts, 5 of which is still mobile one 5w50. Will be diluted even more when I change oil next week. Running 3 coolers 1 B&B in front, 44Row Mocal in wheel well (two 6 inch fans) and stock engine cooler.
2001 996 Twin Turbo