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Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
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what is the gas to oil ratio for a 1981 mercury outboard 80

Resolved Question:

what is the gas to oil ratio for a 1981 mercury outboard 80 hp, 4 cylinder?
Submitted: 7 years ago.
Category: Boat
Expert:  Dominick replied 7 years ago.

Thank You for Your QuestionCustomer


The fuel to oil ratio is 50 to 1



This equates to 1 pint two cycle outboard oil to 6 gallons of fuel


1 Qt to 12 gallons


1 Gallon to 48 gallons and so on


Not just any oil will do, be sure to use a good quality Two Cycle "Outboard" Engine Oil...


Jet ski oil will foul a outboard and the extra expense is unfounded....




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