VP bar and chain oil has up to 136% higher viscosity at bar operating temperature vs competitors chainsaw oil. Our high-tack formula affords all-season peak performance in hot and cold temperatures. A high-quality bar and chain oil is crucial for chainsaws to maintain maximum performance and reliability. If your chainsaw chain runs slowly or your fuel tank runs dry quicker than it should, chances are high that you need to add bar chain oil - and fast. A slow chain and excessive fuel consumption means there's too much friction between your bar and chain. That friction produces excess heat, which can do major damage to your saw.