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Lead Substitute for old motors? #7286518 03/14/12 05:33 PM
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michauxii Offline OP
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Years ago when they were phasing out lead in gasoline, there was a "lead substitute" that was added to gas.
Something about these old motors (6hp evinrude) needed the lead to run properly.
Anyone still making this product OR is there any amendment needed for the motors?


Re: Lead Substitute for old motors? [Re: michauxii] #7286657 03/14/12 06:05 PM
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redchevy Offline
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How old a motor is it?

I have a 1957, and I have never run anything in it but regular old 87 regular unleaded in it. Not sure, but lead in 4 cycle engines was a lubricant for th emost part, sense a 2 stroke has oil in the gas I never considered it an issue, but never really thought about it either.

matt


Re: Lead Substitute for old motors? [Re: michauxii] #7286836 03/14/12 06:58 PM
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Mike Halfmann the boatmann Offline
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By the time you get any ill effects on the unleaded fuel in that engine......You will be looking at new Y2K motors.



mike halfmann
Re: Lead Substitute for old motors? [Re: michauxii] #7287179 03/14/12 08:13 PM
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Performance Outboards Offline
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Lead was put in the fuel to lubricate the valve seats, a two stroke motor does not have valves or anything that needs lubed by the lead. The oil in your fuel lubes everything that needs lubed. Cary



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Re: Lead Substitute for old motors? [Re: Performance Outboards] #7287352 03/14/12 08:56 PM
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michauxii Offline OP
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Thanks for the info!


Re: Lead Substitute for old motors? [Re: michauxii] #7288560 03/15/12 02:12 AM
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Shadetree Offline
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Actually if you are old enough, you can remember when it was recommended to use marine fuel "white gasoline" in outboard engines. Back then you could remove most of the outboards from the boat and carry with one hand, no power trim, jack platesoil injection or ported pistons. The lead in gasoline actually was to control combustion in automotive use. With out lead there was just a violent explosion with and objectionable knock when the cylinder firedon high octane fuel. b



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