TruFuel incorporates a fuel preservative that keeps the product fresh for over 2 years. Because it has no ethanol, it won't harm plastic. Each 32 fl. oz. easy-pour can is ready-to-use and is the perfect way to fuel small engine outdoor power equipment such as string trimmers, blowers, and chain saws. Great for all 4-cycle equipment and engineered specifically for small engines. Premium fuel (92 octane). 32 oz.