15W40 Synthetic Blend 12 x 1 Quart

The 15W40 Synthetic Blend 12 x 1 Quart by EXTREME RACING OIL is a semi-synthetic motor oil engineered for high-performance engines that demand robust protection under demanding conditions. This bulk pack of twelve 1-quart bottles provides versatile coverage for fleet maintenance, racing operations, and serious enthusiasts who require consistent lubrication across multiple vehicles or equipment. The 15W40 viscosity grade balances cold-start flowability with high-temperature film strength, making it suitable for both naturally aspirated and turbocharged powerplants operating in varied climates.

As a semi-synthetic formulation, this motor oil combines mineral base stock with advanced synthetic additives to deliver enhanced oxidation resistance and extended drain intervals compared to conventional oils. The 15W viscosity ensures reliable pumpability in cold environments, while the 40-weight hot viscosity maintains a stable protective film at elevated operating temperatures common in high-performance and racing scenarios. The additive package is specifically designed to minimize sludge formation, reduce wear on critical engine components, and provide superior anti-wear protection for valve trains and bearing surfaces under sustained high RPM operation.

This product benefits performance-oriented operators, fleet managers, and motorsport facilities seeking cost-effective bulk lubrication without compromising engine reliability. Each individual 1-quart bottle is independently sealed, enabling convenient storage and inventory management across workshop stations or mobile maintenance units. The 15W40 synthetic blend is compatible with a broad range of modern gasoline engines, light-duty diesel applications, and aftermarket performance builds that call for enhanced lubricity and thermal stability. Always verify your equipment's manufacturer specifications before use, and follow recommended oil change intervals based on operating conditions and engine load.