Evinrude outboard motors made since 1964 require a 50 to 1 fuel to oil mixture using 6 gallons of gas per 1 pint of oil. Motors made prior to 1964 take a 24 to 1 mixture. The most common mixture for motors made prior to 1955 was 16 to 1.
Evinrude was founded by Ole Evinrude in Milwaukee, Wisconsin, in 1907. Evinrude filed for bankruptcy in 2000 and was bought by a Canadian company by the name of Bombardier Recreational Products. Evinrude produces two-stroke direct fuel-injected motors that vary between 25 and 300 horsepower. Carburetors were used in Evinrude engines until the late 1990s, when direct fuel-injection technology was made available.