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Old 09-30-2012, 08:13 PM
Basilhayden Basilhayden is offline
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Octane rating or ethanol. Which is more

important? My dealer has told me to use 89 octane gas in my mower and handhelds. On the other hand, I can get ethanol free gas in 87 octane. Would the ethanol free/lower octane be better to run? Thanks
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Old 09-30-2012, 08:26 PM
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cgaengineer cgaengineer is offline
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89 in handhelds and 87 in mowers is fine...

That being said, I have not experienced but one problem that I could even relate to ethanol...I think sometimes its used as a thing to blame for crap equipment and poor mechanic work...I'm not saying this is the case all of the time.
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Old 09-30-2012, 08:50 PM
32vld 32vld is offline
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Octane of 87 without alcohol and octane of 87 with alcohol is the same as far as octane rating.
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Old 09-30-2012, 09:12 PM
kawakx125 kawakx125 is offline
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ethanol can and has been proven to be harder on seals and stuff in fuel systems of vehicles. it can eat certain rubbers pretty quickly. newer ones are designed with this in mind but older engines can have problems related to it. it's pretty standard around here to have at least 10% ethanol. the other issue i have with ethanol is there is less energy per gallon than straight gasoline, so you need more ethanol to make the same power. this translates to lower fuel mileage. granted at 10% its not a huge difference but it's still there all the same.
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Old 09-30-2012, 09:26 PM
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Quote:
Originally Posted by kawakx125 View Post
ethanol can and has been proven to be harder on seals and stuff in fuel systems of vehicles. it can eat certain rubbers pretty quickly. newer ones are designed with this in mind but older engines can have problems related to it. it's pretty standard around here to have at least 10% ethanol. the other issue i have with ethanol is there is less energy per gallon than straight gasoline, so you need more ethanol to make the same power. this translates to lower fuel mileage. granted at 10% its not a huge difference but it's still there all the same.
You've opened a can of worms now! I've said ethanol produces less energy on here before and was ridiculed.
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Old 10-01-2012, 05:12 AM
greendoctor greendoctor is offline
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Ethanol has less carbon per pound versus petroleum because of the oxygen in its molecule. The lower percentage of carbon is why there are fewer BTUs, therefore less energy released when it is burned or used in an engine. That oxygen in its molecule is what contributes to its corrosive properties above and beyond what is caused by its tendency to absorb water. In terms of fuel value: ethanol<gasoline<biodiesel<diesel.
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Old 10-01-2012, 08:03 AM
kawakx125 kawakx125 is offline
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another thing i don't understand is why diesel is more expensive now, it's a less refined ''dirtier'' product
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Old 10-01-2012, 08:14 AM
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Quote:
Originally Posted by kawakx125 View Post
another thing i don't understand is why diesel is more expensive now, it's a less refined ''dirtier'' product
No joke...it's because we depend on it so much for transportation of food.
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Old 10-01-2012, 08:54 AM
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easy-lift guy easy-lift guy is online now
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Use only non Ethanol fuel for your equipment. No need to support the corn lobby any more than most are forced to.
easy-lift guy
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Old 10-01-2012, 09:52 AM
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MWLawnService MWLawnService is offline
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Originally Posted by kawakx125 View Post
another thing i don't understand is why diesel is more expensive now, it's a less refined ''dirtier'' product
Tell me about it. It makes absolutely no sense.
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