holley 750 double pumper 440 auto

[Runner]

its been a little while  but i believe that 1100 ppm of zinc is what your after in an oil. the more you have,  the longer the oil will still protect, its not "better" protection.  the amount of zinc goes down as the oil is contaminated.


    i use valvoline 20w-50 racing with a bottle of eos at every oil.  i stay clear of synthetics sence my machinest and my cam supplier told me to(with the exception of rearends and some trannys)