Mercury outboards, 1966 and up, require a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
My 2003 3.3hp outboard motor is 50:1 mixture.
50 to 1 oil and gas mixture
Mercury outboards prior to 1966 use a 24:1 fuel to oil ratio.
An 1985 model, 25 hp Mercury outboard requires a 50:1 fuel, to 2 cycle oil ratio.
50;1
The 120 hp, Force / Mercury outboard, requires a 50:1 ratio, one pint of 2 cycle oil to six gallons of fuel.
For the 1961 Mercury Model 60 outboard motor, the recommended fuel-to-oil mixture ratio is 24:1. This means you should mix 5.3 ounces of two-stroke engine oil per gallon of gasoline. Always check the owner's manual for any specific instructions related to your motor.
50:1
50:1
A 175hp Mercury outboard requires a 50:1 fuel to oil ratio.
The 1973 model, 7.5 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
The 1995 model, 25 hp Mercury outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.