Racing
oil usually contains low levels of detergents as racing engines are used for short, intense periods and then the
oil is changed after a few hundred miles or after each race. I use Mobil 0-40 in the winter, which according to the Mobil 4/7/09 spec. says, 1000 PPM Phos. and 1100 PPM
Zinc. I do not know the ZDDP levels.
