GP-1 10w40 SemiSynthetic Case 4 x 1 Gallon

The GP-1 10W40 SemiSynthetic Case 4 x 1 Gallon is purpose-built for operators, mechanics, and field personnel who demand reliable engine protection in demanding environments. This four-jug case format is standard issue in armories, motor pools, and tactical operations centers where equipment availability and consistent performance are non-negotiable. DRIVEN RACING OIL formulates this blend specifically for vehicles operating under sustained load, variable temperatures, and extended service intervals—conditions common in military transport, law enforcement fleets, and remote field operations.

The 10W40 viscosity rating delivers cold-start flow at sub-zero temperatures while maintaining robust film strength at operating temperature—critical for engines idling in harsh climates or delivering sustained power during extended missions. Semi-synthetic formulation balances conventional mineral oil longevity with synthetic additives that resist oxidation, extend drain intervals, and improve thermal stability across the full operating range. This chemistry reduces sludge buildup in air-cooled or high-stress applications, keeping critical cooling galleries and hydraulic systems clean. Each gallon jug allows for precise top-ups and inventory control across multiple platforms without waste or overstocking.

Tactical motor pools and contract mechanics rely on this case format for fleet maintenance schedules, field repairs, and rapid restocking. The GP-1 10W40 SemiSynthetic Case performs across gasoline and light-duty diesel engines commonly found in tactical vehicles, generators, and support equipment. At 32 lbs total weight with dimensions of 9 x 12 x 12 inches, the case stacks efficiently on vehicle racks, in supply closets, or storage compartments—essential for forward-deployed units. Verify your engine manufacturer's specification sheet; most vehicles rated for 10W40 will benefit from this semi-synthetic protection, but always confirm viscosity and API rating compatibility before use.