15W-50 Break-In Oil - Case (12qts)

The COMP CAMS 15W-50 Break-In Oil – Case (12qts) is a specialized lubricant designed for the critical first hours of operation in freshly rebuilt or newly manufactured engines. This oil is essential for ensuring that engine components such as rings, bearings, and cam lobes seat properly during the break-in period. Whether for a stock rebuild or a high-performance stroker engine, this oil is trusted by builders and shops when precision is paramount.

The 15W-50 viscosity profile of this oil strikes a balance between flow at cold start and film strength under load. It maintains a robust protective layer during the high-friction dynamics of ring seating and valve train run-in. The formulation includes enhanced detergency and anti-scuff compounds that help reduce the risk of micro-welding between cam lobes and lifters, which can lead to catastrophic failures if the wrong oil is used during break-in.

Builders working with flat-tappet or solid-roller cam designs, as well as those utilizing elevated-compression or forced-induction setups, rely on this oil during the first 500–1000 miles. It is specifically engineered to establish proper surface finish and load capacity in critical engine components, ensuring long-lasting performance and reliability.