Dura Lube HL-41705-04 Severe Instant Quiet Motor Oil, 8-Ounce Reduces friction and heat. Helps reduce engine sludge Non viscous product designed to quiet mechanical moving parts Directions: Pour entire contents into crankcase, transmission or other mechanical machine, For power steering use 1-2 ounces total, don't overfill, For larger engines double usage Can be used at oil change time or in between until noise subsides Will not void manufacturer warranties, compatible in gas or diesel engines