Just wondering how much of a performance loss (mph, rpm & mpg) can I expect because of the ridiculous 90/10 law in effect since January? Any harm to my 07
proxs? So far it seems to be about 400rpm (I think). John
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90/10 missouri ethanol
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 sabreski |
90/10 missouri ethanol |
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Posts: 18 (04/07/08 01:59) |
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basschaser |
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Posts: 2215 (04/07/08 02:33) |
We have been running a blend for right at a year and I haven't noticed a bit of loss in performance and no harm thus far. We do need to keep a special eye
on the water fuel separater and run Quickleen.
Judd Lasiter |
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 PhilAddison |
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Posts: 2616 (04/07/08 03:01) |
http://www.mercurymarine.com/serviceandwarranty/mercruiserfaqs/ethanol.php
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sabreski |
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Posts: 19 (04/07/08 05:03) |
Thanks for your responses. Judd, last fall before we had to have the blended fuel, I feel like my proxs performed a little better than this year and I have
definately gotten better driving. I have read the above usage from the factory re85. I was hoping to get some more responses from others who may have had the
same experience. How often do you run quickleen? By the way I have noticed a mileage loss 1-2 mpg in our cars. John
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Fisherman74 |
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Posts: 18 (04/07/08 05:03) |
I don't care for this 10% ethanol for this reason. When they went to it here around Dallas a year or so ago, I found that I lost about two miles a gallon
while running it in my vehicle. Performance has been harder to judge, but I think it may have hurt performance at least a bit. Needless to say I try to fill up
outside the area when convienient. With that said, I would think it has to have at least a similar effect in other engines, including outboards. I also know it
at least seems to go bad quicker while setting in a gas can.
I am not a fan of ethanol at least not at the present. From what I have read in reality it is not any better for the environment by the time you factor in the production of it. Not to mention, if it takes more to go the same distance, then it seems to me, it is not as effecient. |
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oldtimer57 |
a technical answer | ||
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Posts: 867 (04/07/08 08:52) |
Ethanol contains about 66% of the energy for similar volumes. This means that a 10% ethanol mix loses about 3% of the energy produced by a gallon of pure
gasoline. 3+% doesn't seem like much, but as you go to higher altitudes, you will be able to measure the loss caused by the ethanol. Not to mention the
fact that ethanol is currently more expensive than gasoline due to the energy density issue. We have a couple of E85 stations around here selling ethanol for
about 20 cents per gallon less than regular unleaded. But you only get 66% of the miles pure gasoline will produce. making it a pretty expensive deal. Not
to mention what it is doing to the cost of food. Eggs have doubled because chicken farmers are having to pay a premium for ground corn chicken food, because
corn prices are up due to its use to produce ethanol.
All around, it looks like a bad idea at the present. Renewable energy sources would help, but such sources need to fit in with the way we live without being too disruptive. Why would I want to pay $4.00 to travel the same distance I could travel for $3.00 using gasoline, and also see my grocery expenses double as a result??? |
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basschaser |
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Posts: 2217 (04/07/08 09:19) |
John,
I use Quickleen in every tank after I get thru breakin. I didn't realize you were talking about e85 either...I never have ran it in my motor just the normal gas w/ 10% max blend (at least I think that is what it says on the pump) and I try and buy it out away from the metroplex so I don't always seem to get it either. I hope that helps. I may not be getting the fuel mileage but I don't check it often at all...when she is running low I put fuel in it, that way it doesn't hurt as bad. As far as my truck I run a diesel so I don't know about it. I do know that I will lose 1-2 mpg when they switch to winter blend diesel but I know that doesn't have anything to do with the ProXS. 
And it hurts a lot more 
JL |
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Kevenater |
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Posts: 2 (04/08/08 05:10) |
Just a bit of info. I haul gas for a living in Alabama. As far as normal ethanol gas goes.(not e85) don't buy mid grade!!!!! It's identical to the reg
w/ ethanol. They're both 90%reg 10%eth. Just dropped into different takes.... Prem w/eth is 55%prem, 35%reg and 10%eth. The high percentage of reg in prem
is to dilute the ethanol to bring the extra oct of the ethanol back down to 93 octane. Ethanol is something like 130-140 octane. Can't remember exactly. So
save you're money if you're buying midgrade w/ ethanol!!! Just get regular.
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sabreski |
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Posts: 20 (04/08/08 10:25) |
Again thanks for all the info. I was talking of 90/10, and I did see were merc does not want e85 in the tank. What I have noticed from last fall was I actually
thought I would need to go to a 26 tempest after the motor loosened up a little, now my 25 might be a tad too big. The only difference is fuel. John
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