Break In Oil 40W Case 12 x 1 Quart Bottles

Break In Oil 40W Case 12 x 1 Quart Bottles from REDLINE OIL is specifically designed for the critical first operating hours of new or freshly rebuilt engines. This oil is essential for protecting your investment during the most vulnerable phase of engine life, whether you've completed a full engine rebuild or installed a performance crate motor.

The formulation features a 40W viscosity that provides reliable film strength under startup stress, ensuring that new rings, bearings, and pistons seat properly. It includes elevated zinc (ZDDP) anti-wear packages and rust inhibitors to prevent micro-welding between new ferrous surfaces and reduce oxide formation during the initial break-in period.

Engine builders, performance shops, and serious enthusiasts rebuilding carbureted or fuel-injected engines will find this product beneficial. It is particularly suitable for stock or modified small-block Chevrolet and big-block Ford engines, allowing for multiple drain intervals as needed during the break-in process.