1978 Mercury 800,direct 4 charge, 80 hp fuel mixture ratio

JJCOWGIRL

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Joined
Jun 13, 2005
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My brother-in-law just purchased an old speedboat. It has a 1978 Mercury 800 Direct 4 Charge 80 hp engine and we need to know the oil to fuel ratio. Thank you
 

Chris1956

Supreme Mariner
Joined
Mar 25, 2004
Messages
27,036
Re: 1978 Mercury 800,direct 4 charge, 80 hp fuel mixture ratio

50::1 Gas to TCW Oil. Mix 1 pint(16 oz) of oil with 6 gal of gasoline.
 
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