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About That E10 Fuel You're Using

Old 06-09-2021, 05:47 AM
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This YouTuber just posted an excellent video on why E10 should not be used in your boat. It's bad stuff we all know, but this provides smoking gun evidence of just how bad it really is. Enjoy!


Old 06-09-2021, 06:08 AM
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Bummer - nice analysis but with a couple fundamental mistakes. He has condensation since he is evaporating the gas (drops temp). Ethanol fuel is in a jar with a larger surface area, hence more evaporation. Moisture he is collecting is from condensation inside jar. It is all true, but is quite disconnected from what actually happens with small vent line in a marine fuel tank. Also, he shows the expansion and contraction of a fuel can in the sun. Marine tanks do not really experience this since they are below deck and in thermal contact with the water - not a lot of temp change gong on for a big fuel tank (I'm assuming a slipped boat).

I am not a fan of ethanol since it takes away from available energy (hp). However this is an example of a pushing a test to come up with the required outcome.

Put something like Startron in your tank to help keep alcohol/water suspended and run your boat.

Remember those old steel tanks from the 50's and 60's? Yeah - they rusted on the inside from the moisture that collected (in cars too).. No ethanol there...... However we did add it to collect the moisture so it can be burned in the engine. Don't even get me started when fuel/water separators were introduced and why.
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Old 06-09-2021, 06:14 AM
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Even though the test was done under less than ideal conditions and controls, it might help explain why some ethanol users experience no negative effects, while others are plagued with troubles.
Old 06-09-2021, 06:28 AM
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I have used a lot of E10 in my last two boats and neither have suffered any fuel related issues over those past ten years.

I regularly use Startron. This year I had my tank purged and cleaned, and was surprised at the lack of water in the bottom of a 180 gallon, 14 year old tank.
Old 06-09-2021, 11:49 AM
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Ever since ethanol became prevalent in my area my boat has always had vapor lock issues on the hot summer days. If we run it for a while and then shut off for a break or to eat or whatever, it will cough and sputter and idle very rough when I go to start up again. I have an external fuel pump mounted on the side of the engine. Usually pouring a bottle of lake water over it will immediately fix the issue and the engine runs smooth as butter. They started putting the fuel pumps in the fuel tank on later models and that has helped to cure this issue. On hot days I usually leave the blower running and try to idle a few minutes before shutting down for breaks. Ethanol fuel stinks as far as I am concerned....definitely don't use it in any of my lawn equipment.
Old 06-09-2021, 11:54 AM
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Originally Posted by triumphrick View Post
I have used a lot of E10 in my last two boats and neither have suffered any fuel related issues over those past ten years.

I regularly use Startron. This year I had my tank purged and cleaned, and was surprised at the lack of water in the bottom of a 180 gallon, 14 year old tank.

Im with you. 16 years on ethanol and no problems since I changed all fuel lines to ethanol resistant. A good acquaintance of mine owns a marina where I duck hunt and hes been using startron exclusively for a while now and hes see better performance with it over all other fuel treatments.
Old 06-09-2021, 11:56 AM
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Dries out every seal there is
Old 06-09-2021, 12:11 PM
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Great explanation of whats going on, although its not identical to whats actually happening inside a boat gas tank. However if your boat sits a lot, (or anything for that matter that has an "open vented" tank) non ethanol fuel would be my choice. My boat sat for 2 years without moving and has only had non ethanol in the tank, 120 gallon tank left at 50% fill. Not one drop of water in the racor, fuel smelled like new, and engine fired right up.
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Old 06-09-2021, 12:38 PM
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Ethanol plus Startron for the past 10 years and not a single issue between 2 different boats. Startron works
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Old 06-09-2021, 01:09 PM
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9/10..... No ethanol premium 92. Stabilized.

Why? Because my boat tends to sit for long periods.... Unexpectedly. So putting in the fuel that will have the least chance of fouing carburetors and picking up moisture from a tank that's vented to the atmosphere..... is a good preventative thing to do.

Just ran 18-month-old gas fishing last week, without a single issue.

If you've ever had to siphon 50 gal of bad nasty old varnished gas/ water out of a tank and get rid of it, you'll make sure you never have to do that again
Old 06-09-2021, 01:51 PM
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Originally Posted by triumphrick View Post
I have used a lot of E10 in my last two boats and neither have suffered any fuel related issues over those past ten years.

I regularly use Startron. This year I had my tank purged and cleaned, and was surprised at the lack of water in the bottom of a 180 gallon, 14 year old tank.
E10 is essentially dry gas with all the ethanol if you had water in bottom of tank you would be phase separated.
Old 06-09-2021, 02:13 PM
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Originally Posted by IrocboyZ28 View Post
Dries out every seal there is

B.S.
Old 06-09-2021, 02:15 PM
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30 years with E10 (boats and lawn equipment). No issues
Old 06-09-2021, 02:22 PM
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Yall realize that the majority of the country does not have a choice but to run ethanol. I agree the stuff is not great, but its not as bad as its made out to be. If I had I choice Id run non-ethanol, but I dont. Other than destroying every piece of lawn equipment I have, its been fine in boats and cars.
Old 06-09-2021, 03:48 PM
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Ive been using it for about 15 years in everything. I try to limit the time I store the gas to one year or less.
Old 06-09-2021, 03:55 PM
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The thing is stations aren't running E10 anymore, they are sneaking up the percentages. Check with your local tuning shops (as in people that do tunes on performance cars) and ask them what they are seeing from people running pump gas. Tuners have posted they are seeing their customers with pump gas as high as 18% ethanol. Maybe the next thing the government will have to do is add ethanol percentage testing. So not only it is actually a gallon coming out of the nozzle, it's also a gallon of what they say it is (E10) and not a gallon of E18.
Old 06-09-2021, 04:30 PM
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Originally Posted by Furbird View Post
The thing is stations aren't running E10 anymore, they are sneaking up the percentages. Check with your local tuning shops (as in people that do tunes on performance cars) and ask them what they are seeing from people running pump gas. Tuners have posted they are seeing their customers with pump gas as high as 18% ethanol. Maybe the next thing the government will have to do is add ethanol percentage testing. So not only it is actually a gallon coming out of the nozzle, it's also a gallon of what they say it is (E10) and not a gallon of E18.

Really. Where do you live?
Old 06-10-2021, 08:25 AM
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Originally Posted by Furbird View Post
The thing is stations aren't running E10 anymore, they are sneaking up the percentages. Check with your local tuning shops (as in people that do tunes on performance cars) and ask them what they are seeing from people running pump gas. Tuners have posted they are seeing their customers with pump gas as high as 18% ethanol. Maybe the next thing the government will have to do is add ethanol percentage testing. So not only it is actually a gallon coming out of the nozzle, it's also a gallon of what they say it is (E10) and not a gallon of E18.
Originally Posted by Thalasso View Post
Really. Where do you live?
One way to find out. https://www.amazon.com/REV-X-Super-T...xpY2s9dHJ1ZQ==
Old 06-10-2021, 09:17 AM
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Some people like to blame other people for anything and everything.
Old 06-10-2021, 09:42 AM
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The only solution for E10 and any other gas problems is to use your boat often, if your constantly turning over your fuel you won't have a fuel issue do that and change your filters a bit earlier than you really need to and you won't have an issue. Let your boat sit your screwed.

If you look at "Project Farm" on Youtube and other "Experiments" it all seems like nothing really works on water and Ethanol all the additives looked like snake oil.
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