BR40 SAE 10W-40 | Drum

BR40 10W-40 Break-In Motor Oil 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. Viscosity typical of 10W-40. WARNING: Driven Racing Oils are formulated for classic & racing applications only. This engine oil does NOT meet any current API or OEM Engine Oil Specifications. These oils are not intended for vehicles quipped with catalytic converters.