The recommended fuel/oil ratio for a 1972 model 65hp Mercury is 50:1, roughly six gallons of fuel to one pint of2 cycle oil.
50:1
50 : 1 is the correct fuel mixture
A 4hp Mercury outboard requires a 50:1 fuel to 2 cycle oil mix.
50:1
50:1
50:1
50;1
50:1
I have a 1999 Mercury 2stroke 5HP outboard and the owners manual states 50:1 Gas/Oil mixture.
20/1
the mixture is 50:1
I have a 1972 85esl72 Johnson outboard motor and I use a 50:1 ratio.