DBR 15w40 Diesel Break- In Oil Case 4 x 1 Gallon

The DBR 15w40 Diesel Break-In Oil Case 4 x 1 Gallon from DRIVEN Racing Oil is specifically formulated for new diesel engine conditioning and initial wear-in periods. This oil is designed for operators who require enhanced bearing protection during the critical first-run hours when metal-to-metal contact stress is at its peak. Break-in oil acts as a safeguard during the phase where your diesel engine's piston rings, bearings, and valve train are seating and establishing proper lubrication.

DRIVEN's 15w40 formulation provides a mineral-based viscosity with elevated zinc and phosphorus anti-wear (ZDDP) additives, which are essential for preventing scuffing on unfinished cylinder walls and bearing journals during the run-in period. The 15w cold-flow viscosity ensures rapid oil circulation even in cold conditions, while the 40-weight hot viscosity maintains robust film strength under load at operating temperature. This formulation prioritizes maximum protection during the initial break-in phase.

Diesel mechanics, engine builders, and fleet operators who are upgrading or rebuilding engines can rely on this product to protect their investments. The four-gallon case format is ideal for multiple oil changes during the critical break-in phase, ensuring that your engine receives the necessary protection during its early hours of operation.