HR5 10w40 Conventional Oil Case 12 x 1 Quart

The HR5 10w40 Conventional Oil Case is engineered for drivers and mechanics who demand reliable engine protection without the premium cost of synthetics. This case of 12 one-quart bottles delivers DRIVEN RACING OIL's proven formula across multiple oil changes, making it ideal for street machines, weekend warriors, and daily drivers who understand the value of consistent lubrication. Whether you're running a modified carbureted V8, a turbocharged four-cylinder, or a naturally aspirated engine, conventional 10w40 remains a trusted choice for engines operating in moderate climates and standard duty cycles.

DRIVEN RACING OIL's HR5 formulation provides robust anti-wear protection and stable viscosity across a broad temperature range—the 10w winter rating ensures cold-start flow in cooler conditions, while the 40-weight hot rating maintains film strength under sustained load and heat. The conventional base stock resists shearing better than many budget alternatives, preserving viscosity stability during extended driving sessions or highway cruising. Detergents and anti-oxidants keep ring lands clean and prevent sludge buildup, critical for older engine designs or high-mileage platforms where synthetic compatibility may be a concern.

Mechanics and enthusiasts favor this case format for routine maintenance schedules and fleet service, eliminating multiple single-quart purchases at the shop counter. The compact 10.4 x 9.65 x 13.7 inch case weighs 24.13 lbs and fits easily on shop shelves or in garage storage, allowing you to stock up without clutter. Compatible with any gasoline engine requiring 10w40 oil—from classic muscle cars and hot rods to contemporary street performance builds—this conventional blend is your economical, reliable answer to keeping bearings, pistons, and valve trains properly lubricated between full-drain intervals.