XP4 15w50 Conventional Oil Case 12 x 1 Quart

The XP4 15W50 Conventional Oil Case delivers reliable, full-case lubrication for street and track vehicles that demand consistent viscosity across a wide temperature range. Built for drivers and mechanics who understand that oil selection directly impacts engine longevity and performance—especially in modified powerplants running higher operating temperatures or tighter tolerances. This case of 12 quarts ensures you have adequate supply for scheduled maintenance intervals or multiple vehicle coverage without frequent reordering.

DRIVEN RACING OIL's XP4 formulation uses a conventional base stock engineered to maintain viscosity stability in both cold starts and sustained high-load conditions. The 15W50 weight provides a 15-weight pour point for reliable cold-start flow while delivering a full 50-weight film strength at operating temperature—critical for protecting bearing surfaces and piston skirts under acceleration or sustained throttle application. Conventional oils in this performance tier resist shear breakdown better than many budget alternatives, making this choice ideal for naturally aspirated engines, older muscle cars, and platforms where synthetic blends introduce incompatibility concerns.

Mechanics and enthusiasts running carbureted engines, vintage V8s, or non-turbo platforms benefit most from this conventional formulation, as it avoids seal-swell issues sometimes associated with synthetic base stocks in older engine designs. The 15W50 viscosity suits warm-climate operation and vehicles that see regular spirited driving or track sessions where oil temperature climbs steadily. A full case of 12 quarts covers two to four oil changes depending on engine displacement and sump capacity, making bulk purchasing economical for shops, fleet operators, or multi-car enthusiasts managing maintenance across several builds.