The same high Zinc and Phosphorus formula as our original break-in oil, now in SAE 10W-40 viscosity, Well suited for classic muscle car, European sports car and motorcycle engines, Ideal for flat tappet and aggressive roller valve trains, as well as Ethanol-blended, pure Methanol and oxygenated race fuels, Does not require additional ZDDP additives, Good for dyno testing, one night of racing or up to 400 miles on the street.
