Engine Tech: Flat-tappet Lifters Still Viable in Performance Engines - Dragzine
VR1 High Performance Racing Oil for Push-Rod and Tappet Engines Valvoline VR1¿ Racing Motor Oil SAE 20W-50 5-Quart; valvoline VR1 racing oil racing motor oil 20W50 20W-50 high zinc motor oil
Preventing Flat Tappet Cam Failures
Pit Stop: Flat-Tappet Cams Need High-Zinc Motor Oils