It continues to provide maximum protection at tempera-tures that oxidize conventional oils. Synthetic Heavy-Duty Diesel and Marine Motor Oil is formulated for extended drain intervals. Its advanced 12 TBN formulation keeps engines in superb condition even when the oil is used for extended drain intervals. It circulates rapidly to provide vital lubrication and prevent engine wear caused by lack of oil flow. Many conventional lubricants cannot pass this requirement.
Low volatility means less oil vapor passing into the combustion chamber.
A reduction of oil vapor means lower oil consumption and lower exhaust emissions. Extended drain intervals may be used if they are supported by the findings of used oil analysis. Change other manufacturers' oil filters at the engine manufacturer's recommended filter change intervals.