GP-1 20w50 SemiSynthetic Case 4 x 1 Gallon

The GP-1 20w50 SemiSynthetic Case 4 x 1 Gallon from DRIVEN RACING OIL is purpose-built for high-performance engines and modified vehicles that demand robust lubrication under extreme operating conditions. This four-gallon case provides the viscosity and film strength needed for racing engines, turbocharged platforms, and vehicles running tighter tolerances or elevated compression ratios. Whether you're maintaining a street-driven race car, a supercharged build, or an engine with aggressive cam profiles, this semi-synthetic formulation bridges synthetic durability with conventional oil accessibility.

A 20w50 weight grade delivers cold-start flowability while maintaining a thicker protective film at operating temperature—critical for flat-tappet camshafts, high-RPM bearings, and engines prone to cold-start scuffing. The semi-synthetic base resists thermal breakdown better than mineral oil, extending drain intervals and protecting critical surfaces during sustained high-load driving. DRIVEN's formulation includes anti-wear additives and detergents engineered to handle fuel dilution, sludge formation, and metal particulates common in forced-induction and racing applications. This grade also suits vintage or carbureted engines where mineral-based viscosity stability matters.

Ideal for track-focused builders, street-strip hybrids, and mechanics restoring or modifying classic performance engines, the four-gallon case minimizes inventory management while ensuring fresh stock rotation. This product works across naturally aspirated and boosted platforms, from small-block Chevys and Ford modular engines to imported builds and contemporary performance vehicles. Always verify your engine's oil specification and bearing clearances before switching viscosity grades; thicker oils demand proper warm-up procedures and may affect fuel economy on stock applications. Store in a cool, dry location and inspect containers for damage before use.