10W40 Premium Blend 12 x 1 Quart

EXTREME RACING OIL 10W40 Premium Blend Motor Oil delivers conventional street performance protection in a convenient 12 x 1 quart case. This multi-viscosity formulation is engineered for reliable lubrication across a wide temperature range, making it suitable for daily-driven vehicles and weekend performance applications where dependable oil film strength matters.

The 10W40 viscosity rating indicates the oil flows at 10 weight when cold, ensuring easier cold starts and faster circulation to critical engine components in low-temperature conditions, while maintaining a 40-weight film strength at operating temperature. This balanced specification works across moderate climates and seasonal driving patterns. Conventional mineral-based formulations like this provide cost-effective protection for engines not requiring synthetic performance or extended drain intervals, and are ideal for rebuild situations, vintage vehicle restoration, or fleet management where standardized oil selection simplifies inventory.

The case packaging—12 individual quart bottles—suits storage, inventory control, and portability for shops, fleet operators, and enthusiasts who prefer single-quart units over bulk containers. Each quart bottle is convenient for topping off between service intervals or rapid deployment in multi-vehicle operations. Whether sourcing motor oil for regular maintenance, engine rebuilds, or ongoing fleet service, this 10W40 conventional blend offers straightforward performance specifications without premium synthetic pricing.

Street performance 10W40 motor oil sits in the mainstream segment—neither specialty synthetic nor heavy industrial grade—making it the practical choice for vehicles where OEM or driver experience confirms compatibility with conventional 10W40 oil. Verify your vehicle's maintenance manual or service specification before use to confirm compatibility with this viscosity grade.