John, > for more years then I care to remember, I used only Valvoline, about 4 > years ago I started to use Shell Rotella T in all my engines (not the > bike) > and like everyone else, worried about not enough zink, and phosphorous.
I think engine oil brand is often a case of personal choice. I never liked Valvoline. > I wonder if the north had anything to do with the way Quaker State and > Pennzoil would react in the motors? this was back in the 60's however, and > not racing oil.... I was in the Kansas City, Misoura, area with its ice storm winters and humid summers. I was around Howard-Willy from 1958 to 1964, when he died, and around Kahan (the new buyer of the dealership) from 1964 to 1979. I was at Ronnie's from 1969 to 1975. Howard-Willy and Kahan only used conventional engine oils from Quaker State and bought both bulk 55 gallon drums and cases of quarts and gallons. At Ronnie's, we sold only Valvoline Racing Oil in all of the various weights and Pennzoil Racing Oil in all of its various weights. Milton Schick 1964 442 Cutlass [EMAIL PROTECTED]
