mercruiser fuel and temp

the_dave85

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Joined
Aug 5, 2005
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7
i have a 68 mercruiser 140 and was wondering what kind of fuel to use. it says on the side use leaded ( regular or premiem) 93 octane minimum. is this true? if so how much lead should i add. and also what temp should this boat normaly run at?
 
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