Olympic Oil Mm Gal Bar & Chain Oil (Pack Of 6) 597617 Chain Saw Accessories Quantity of (6): Master Mechanic, Gallon, Chainsaw Bar & Chain Oil Reduces Friction & Prolongs Service Life Of Bars, Chains, & Sprockets By Resisting Oil Thrown Off At High Chain Operating Speeds Prevents Rust, Resists High Temperatures & Flows Freely At Low Temperatures Not Suitable For Internal Engine Use.