Using the right oil with your compressor is vital to its performance and health, and Rolair 34-ounce (Bottle) All-Weather Synthetic Blend Air Compressor Oil is the ideal fuel for your compression device. It allows your compressor to function in harsh weather conditions ranging from -40 to 110 degrees Fahrenheit. This synthetic blend air compressor oil will also reduce the buildup of carbon on your compressor's valves, resulting in optimal compressor functioning for a long time. It also reduces the need for regular repairs and maintenance, and reduces the frequency of needing an oil change. Rolair oil helps with use in frigid temperatures, as it makes it easier to start the compressor in such conditions. Plastic bottle comes with 34 ounces of oil, and provides 2,000 to 4,000 hours of life in compressor.