BLZOL Primo Plus 20W40(API-CF4) is a high-quality performance multi-grade engine oil meeting API CF-4 performance requirement, formulated from selected base oils and comprising of antioxidant, detergent dispersant, antiwear and a special oil soot thickening control agent to give optimum performance in modern and heavy-duty diesel engines. The multi-graded version provides ease of engine starting in low temperature conditions and increase engine durability maintaining viscosity evenduring high operating temperatures.