1979 Merc 7.5hp oil mix

Bondo

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Hey guys,.... I'm lazy,.... Can somebody tell my how much oil to put in my 3 gallon gas tank, to mix with non-ethanol gas to run this motor,..??

1979 Merc 7.5hp,...

Thanks,..... Bondo,....
 

racerone

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Mix is 50:1----Is your tank volume in US gallons or IMP gallons ?---400 ounces requires 8 ounces of oil.------And ~500 ounces takes 10 ounces of oil.
 
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Bondo

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Mix is 50:1----Is your tank volume in US gallons or IMP gallons ?---400 ounces requires 8 ounces of oil.------And ~500 ounces takes 10 ounces of oil.
Cool,.... Thank you,...... 8 ounces it is,...... :)
 

tpenfield

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Yes, a 50:1 mix is about 2-1/2 ounces per gallon.

Those small Mercury's are great motors. :D
 

QBhoy

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Might not help you, being a foreigner thinking of units. 20ml for a litre, 100ml for 5 litre (bit over a gallon there) and 400ml for a 20 litre can (standard metal Jerry can size).
For what it’s worth 😂.
 
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