10w40 Synthetic Oil Case 12x1 Quart RS1040

The 10W40 Synthetic Oil Case from MAXIMA RACING OILS delivers professional-grade lubrication for street and track vehicles that demand reliable engine protection across variable operating temperatures. This 12-quart case is engineered for automotive enthusiasts and mechanics who understand that oil selection directly impacts engine longevity, thermal stability, and overall performance. Whether you're maintaining a daily driver or preparing a modified vehicle for aggressive driving conditions, this synthetic formulation provides the viscosity consistency and detergent package necessary to keep internal components protected under sustained load.

Maxima's 10W40 synthetic blend uses advanced hydrocarbon technology to maintain film strength at high temperatures while flowing freely during cold starts—critical for turbocharged engines and modified powerplants running elevated boost or compression ratios. The 10-weight winter rating ensures quick circulation through galleries and bearing surfaces when engine temperatures are low, while the 40-weight summer rating sustains viscosity under load, preventing breakdown during sustained high-RPM operation. This viscosity window makes the formulation compatible with most naturally aspirated and moderately forced-induction engines that call for a heavier synthetic oil than standard 5W30 offerings.

Engine builders, performance shops, and serious DIY mechanics choose MAXIMA RACING OILS for vehicles running custom cam profiles, upgraded ignition systems, or tuning files that increase combustion temperatures and bearing pressure. The case format—containing twelve 1-quart bottles—suits fleet maintenance, shop inventory, and drivers who perform frequent oil changes on multiple vehicles. Always verify your owner's manual or engine manufacturer specification before selecting oil viscosity, as some newer engines are optimized for lighter grades; however, vehicles with high mileage, modified internals, or extended drain intervals often benefit from the extra film strength of a 10W40 synthetic.