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-   -   ethanol (https://www.nopistons.com/2nd-generation-specific-17/ethanol-2483/)

prometheosophy 05-08-2002 11:00 PM

Anyone know what kind of effects ethanol in gas (12-80%) has on engine wear, power, emissions, etc.? :eh:

rota-re 05-08-2002 11:54 PM

Isn't ethanol the "good" type of alcohol, found in beers, spirits etc?

(by good i mean, your body can handle it... won't kill u as fast as other types)



:throwupen:

agrillo 05-09-2002 08:07 AM


Anyone know what kind of effects ethanol in gas (12-80%) has on engine wear, power, emissions, etc.?
Mazda did not recommend ethanol for rotary engines...dries out seals.....not good for apex seals and such.... :notify:

payne171 07-10-2008 12:33 AM

Perhaps it isn't good for rotaries; they are certainly a unique case. There is a lot of disinformation on ethanol as a whole, though. It is an octane booster, perhaps even higher than the printed octane rating functionally because its knock resistance degrades less under load than gasoline. It could be hard on apex seals, but if adding oil works like many already do with gasoline, than it would actually improve longevity because it burns cooler.

It's not good alcohol, though. It's denatured so you can't drink it.

mazdaspeed7 07-10-2008 08:23 AM


Originally Posted by payne171' post='904201' date='Jul 10 2008, 12:33 AM
Perhaps it isn't good for rotaries; they are certainly a unique case. There is a lot of disinformation on ethanol as a whole, though. It is an octane booster, perhaps even higher than the printed octane rating functionally because its knock resistance degrades less under load than gasoline. It could be hard on apex seals, but if adding oil works like many already do with gasoline, than it would actually improve longevity because it burns cooler.

It's not good alcohol, though. It's denatured so you can't drink it.





Denatured is a name given to ethanol, which is drinkable, that has been mixed with methanol, or wood alcohol(which is poisonous) to make it undrinkable. This is done to avoid the liquor taxes on ethanol.

defprun 07-15-2008 05:24 PM

Technically using a premix of ethanol/oil fix the dried up seals problem or not XD


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