I have a 340 with a flat tappet cam. I used to use Rotella with the Hughes Engines zinc additive which is discontinued. Lucas Hot Rod oil is difficult to find out west which limits my options. Any opinions on Valvoline VR-1 high zinc oil?
Love it for my wife's race/street car and notice no difference between it and the Driven HR race oil I ran in it. My car can't stand it and I had to go back to the old stuff. I gained a temperature change in the motor and lost consistency. Both oils are very similarly rated and of course, one is cheaper than the other (by a lot). But not the one my car liked.
My cars issue might be a synthetic thing and it's strictly a track car.
This forum is not great for this type
of information, I would look to independent lab test and not advertising hype or opinions.
I have a 340 with a flat tappet cam. I used to use Rotella with the Hughes Engines zinc additive which is discontinued. Lucas Hot Rod oil is difficult to find out west which limits my options. Any opinions on Valvoline VR-1 high zinc oil?
Actually agree with Moparofficial and 66Jim, and Trailbeast. LOLI have a 340 with a flat tappet cam. I used to use Rotella with the Hughes Engines zinc additive which is discontinued. Lucas Hot Rod oil is difficult to find out west which limits my options. Any opinions on Valvoline VR-1 high zinc oil?
FWIW.... Excess ZDDP has been reported in some research to cause different problems. (Spalling on some wear surfaces). IIRC the test showed such issues starting at around 2500 ppm. 1200-1300 ppm is adequate, and is the typical range of the older oils.Lucas hot rod oil is 2100 ppm
FWIW.... Excess ZDDP has been reported in some research to cause different problems. (Spalling on some wear surfaces). IIRC the test showed such issues starting at around 2500 ppm. 1200-1300 ppm is adequate, and is the typical range of the older oils.