DEWALT Biodegradable Chainsaw Oil is a high-performance biobased formulation that is compatible with all gas and battery-operated saws. As a 100% loss application, it is important to use biodegradable chainsaw oil to help reduce environmental pollution. This All-Seasons -15°F bio-based chainsaw oil has a higher viscosity index than any petroleum chainsaw oil and is a USDA Certified Biobased Product. Tested on thousands of cuts measured with thermocouples on the bar, motor and PCB, this oil is designed to maximize bar and chain life while being safer for the planet.