• Driven BR40 10W-40 Break-In Motor Oil, 1 Quart
• 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