Lucas SAE 30 Engine Break-In Oil is specially designed to reduce the potential of engine failure during hard break-in. This product contains high levels of zinc and phosphorus maximum protection. Professional engine-builders that use Lucas Break-In Motor Oil will see the difference of the proven barrier of protection and is Compatible with Ethanol, Methanol and high octane race gas. Benefits: Quicker more efficient ring seal. Higher levels of zinc and phosphorus maximum protection. A must use for flat tappet camshaft break-in. Less blow-by equates more power and better ring seal. Requires no moly supplement and no additional additives. Compatible with methanol and high octane race fuel. Recommend use on initial break-in of both flat tappet and roller camshaft applications for maximum protection and performance. Excellent on track performance prior to switching engine over to the racing only line conventional or synthetic.