GP-1 40W Conventional Oil Case 4 x 1 Gallon

The GP-1 40W Conventional Oil Case from DRIVEN RACING OIL delivers reliable engine protection for street machines and track-focused builds that demand consistent lubrication across a wide operating temperature range. This conventional formula is engineered for enthusiasts who prioritize proven, cost-effective engine maintenance without synthetic pricing, making it an ideal choice for classic restorations, daily drivers, and bolt-on modification platforms where durability and value align. The 4-gallon case format ensures you maintain consistent oil grades across multiple vehicles or extended service intervals without supply gaps.

Conventional 40W motor oil operates through a mineral base stock and robust additive package that establishes stable film strength under sustained engine load and heat cycling. The 40-weight viscosity provides optimal flow at startup while maintaining adequate protection during sustained driving and light performance applications, protecting critical bearing surfaces, valve trains, and piston rings across varying ambient temperatures. DRIVEN RACING OIL formulates for real-world engine demands—managing shear stress, deposit control, and wear prevention—without the synthetic premium, making it effective for rebuilds, stock powerplants, and mildly modified engines operating in conventional parameters.

Mechanics and weekend builders favor this four-gallon case for fleet maintenance, multi-vehicle shops, and garages standardizing on a single reliable grade for vintage and contemporary platforms alike. Compatibility spans carbureted and fuel-injected engines, manual and automatic transmissions when specified for crankcase use, and both cast-iron and aluminum block construction—verify your engine manufacturer's viscosity recommendation before installation. Bulk case purchasing reduces per-gallon cost while ensuring fresh, sealed inventory for season-long availability.