TRUSYN™ Zero Friction™ 10W-40 engine oil is formulated with the latest synthetic base oils, superior quality group II base stocks and performance enhancing viscosity modifiers, yielding a product that has a very high viscosity index. This allows the engine oil to operate efficiently over a broad temperature range providing excellent engine protection on start-up, maintains adequate film strength at high temperatures and thereby significantly reduces engine wear. Carefully selected OEM approved additives are used to guarantee long-lasting engine performance.