GP-1 Semi-Synthetic 15w40 1 Quart

DRIVEN RACING OIL GP-1 Semi-Synthetic 15w40 motor oil in a 1 quart bottle is engineered for engines that demand consistent protection across variable operating temperatures and demanding duty cycles. This semi-synthetic formulation bridges the gap between conventional and fully synthetic oils, delivering reliable film strength and anti-wear performance in a cost-effective package suitable for both street and performance applications.

The 15W40 viscosity grade provides dependable cold-start flow during startup while maintaining a protective oil film at elevated operating temperatures. Semi-synthetic GP-1 formulations balance oxidation resistance and thermal stability, making them suitable for engines experiencing moderate stress or extended service intervals. The single-quart format accommodates top-off maintenance, seasonal fluid changes, or supplemental reserve supplies for fleets and mobile equipment operators.

This product serves operators, mechanics, and equipment owners who prioritize proven lubrication performance without synthetic pricing. DRIVEN RACING OIL targets users of trucks, diesel engines, older diesel and gasoline powerplants, and industrial equipment where 15W40 specifications are factory-recommended or industry-standard. The semi-synthetic formulation provides improved oxidation resistance and lower volatility compared to conventional mineral oils, extending drain intervals and protecting critical bearing surfaces under sustained load.

DRIVEN RACING OIL GP-1 is classified as general-purpose motor oil, making it a versatile choice for fleet maintenance, field service, and emergency reserve supplies. Always verify that 15W40 meets your engine manufacturer's specifications before use, as some modern engines require lighter viscosity grades or fully synthetic formulations.