Poulan chain saws require a 40 to 1 fuel-to-oil ratio. Poulan recommends mixing 3.2 ounces of oil with 1 gallon of gas to achieve this ratio and shaking the mixture for approximately 10 to 15 seconds to make sure the oil and gas successfully combine.
Oil and gas separate over time even after a thorough mixing. Consequently, Poulan recommends shaking the mixture again before refueling a chain saw. Poulan products require the oil to be two-cycle air-cooled engine oil and gasoline to be 87-octane regular unleaded gasoline. Fuel should not be kept in the chain saw for more than 30 days to prevent gum deposits from forming in the fuel system.