Generally speaking, what motor designs (old or new), DFI, EFI, Carbed, 4-stroke can best tolerate ethanol fuel in terms of engine longevity and reliabiltiy?
Generally speaking, what motor designs (old or new), DFI, EFI, Carbed, 4-stroke can best tolerate ethanol fuel in terms of engine longevity and reliabiltiy?
My guess would be the newest as design/improvements added to meet current fuel supply.
Speaking of the ENGINE ITSELF (and the lines INSIDE the engine cowling), Mercury Outboards manufactured from 7/97 and later should all contain Ethanol Resistant lines/components, rated for UP TO 10% Ethanol content.
Some models prior to this date may also be complaint.
Recommend reading through the following post, as MOST boats manufactured before 1/2011 are experiencing fuel SUPPLY (boat) system deterioration:
http://www.bbcboards.net/zerot...first
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Thanks! Other than the fuel line issue, does one engine design better tolerate the use of ethanol over the others?
All were designed to tolerate up to 10%.
Each design has it's own problems that may arise with repeated use of ethanol fuels, especially as the approach the 10% level.
Although the 4-stroke and DFI models may be slightly less likely to experience "immediate" problems, testing and time have shown that they also suffer adversely.
I'm really not going to say that ANY of them fairs better than the other in the "long-term".
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
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