Do it best SAE 40 bar & chain oil is designed to prevent rusting & reduce wear & Linkage breakage thus extending bar & chain life. Penetration into Rivet holes & the bar channel is assured. Designed especially for lubrication of bar & chain saws & open or enclosed chains on motorcycles, snowmobiles, & Lawn & garden Equipment. Additional benefits include high load carrying capacity minimizing wear of bar & chain, reduced Throw off & Heat build up, & rust & corrosion protection. Recommended for use in temperatures above 20 deg (degree).