Mag1 MG07543P Full Synthetic All Fleet Diesel Engine Oil, SAE 5W-40, 1 GallonSpecially engineered for heavy duty diesel and gasoline engines operating under all service conditions. High detergency and superior dispersancy keep engines and pistons clean and soot suspended in the oil despite longer drain intervals and increased soot loading. 1 gallon Excellent TBN retention Superior chemistry, superior performance Exceeds tough U. S. Performance for heavy duty diesel and gasoline engine Outstanding wear performance Increase fuel