HR4 10w30 Synthetic Oil 1 Qt Bottle

DRIVEN RACING OIL HR4 10W30 synthetic oil in a 1-quart bottle is engineered for high-performance engines that demand superior protection and thermal stability. This full synthetic formulation delivers consistent viscosity across extreme temperature ranges, making it ideal for vehicles subject to aggressive driving conditions, racing applications, and prolonged high-rpm operation where conventional oils fall short.

The 10W30 viscosity grade balances cold-start flow with hot-temperature film strength. At startup in winter conditions, the 10-weight component ensures rapid oil circulation to critical engine components. Once warmed to operating temperature, the oil maintains a 30-weight body that resists thinning under sustained heat and load, preserving boundary lubrication between pistons, rings, and cylinder walls. Synthetic base stocks in the HR4 formulation offer superior oxidation resistance compared to mineral oils, extending drain intervals and protecting against sludge and varnish buildup in turbocharged or naturally aspirated engines.

This product suits drivers and engine builders who prioritize maximum protection during high-stress driving—road racing, track days, towing under load, or hot-climate operation. The 1-quart bottle format is convenient for topping off between oil change intervals, spot-checks on touring vehicles, or maintaining a supply for mobile workshops and racing teams. Verify compatibility with your engine's specifications before use.

As a synthetic 10W30, this oil represents a middle ground in the performance spectrum—lighter than 10W40 for improved cold flow, heavier than straight 10W for higher-temperature stability. It pairs well with modern fuel-injected engines and older carbureted platforms where traditional multigrade oils have proven effective.