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post #21 of 53 (permalink) Old Apr 8th, 2010, 7:16 pm Thread Starter
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FWIW, I'm at about 7,000 miles, and ran several tanks of E10 through the tank. Nothing but. No issues.

The reason, I feel, why I've suddenly seen "spread", is that my tank was near empty, it was parked in the sun, and I rode about 40 miles home on a 93 day.

I don't see how adding a 10% mixture of alcohol to gasoline, would affect the plastic any more than regular gasoline.

But, that's just my opinion. I'm not a chemist.

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post #22 of 53 (permalink) Old Apr 8th, 2010, 7:36 pm
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In the shop I am starting to see a lot of cars and trucks with rotted fuel lines, rubber parts, etc. from the ethanol in todays gas.

Its horrible shit, and I wish it was banned.
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post #23 of 53 (permalink) Old Apr 8th, 2010, 11:06 pm
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You would think that Ducati would fix this issue so that it didn't keep happening.....WTF?!
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post #24 of 53 (permalink) Old Apr 9th, 2010, 3:29 am
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09

my 09 has some spreading but I can tell it is... the top tree hits the tank.... not to bad and I'm waiting to here back from the dealer.....I joined "the club" about 6 months ago.

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post #25 of 53 (permalink) Old Apr 9th, 2010, 7:27 am
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Quote:
Originally Posted by TiltTheHorizon View Post
I don't see how adding a 10% mixture of alcohol to gasoline, would affect the plastic any more than regular gasoline.
Ethanol (or alcohol) and gasoline are both solvents but ethanol is a much stronger solvent than gasoline. The automobile, motorcycle, aviation and marine industries have for years designed plastic/fiberglass tanks that will hold gasoline. Designing tanks that will hold ethanol is an entirely different matter and they just aren't there yet.

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post #26 of 53 (permalink) Old Apr 9th, 2010, 7:48 am
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Quote:
Originally Posted by TiltTheHorizon View Post
I don't see how adding a 10% mixture of alcohol to gasoline, would affect the plastic any more than regular gasoline.
Ethanol dissolves plastic, and has been known to cause issues with fuel pumps, fuel lines, as well as plastic fuel tanks. Since the U.S. began mandating ethanol content in gasoline, there have been a great many reports of problems in vehicles related to the presence of ethanol.

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post #27 of 53 (permalink) Old Apr 9th, 2010, 9:48 am
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So, if you walk out to bike right now, reach under the right front side of the tank, and pull, there is no movement at all? Every GT I've seen has a loose tank, and some are very warped on top of that.
I can pull it up maybe a 1/4", and side to side there's just a tiny bit of movement that appears to be from the tank itself flexing from the pulling rather than the rubber grommets sliding in the mounts. This is how it's been since I've had the bike, which has been a bit over a year now. It doesn't appear the previous owner ever shimmed the tank.

I do notice there's a bit more of the right grommet showing than the left, but am not sure if that's always been the case or not. But with 6 months of eth-gas usage and the weather heating up, I'm checking it more frequently.

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post #28 of 53 (permalink) Old Apr 9th, 2010, 10:01 am
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Quote:
Originally Posted by TiltTheHorizon View Post
FWIW, I'm at about 7,000 miles, and ran several tanks of E10 through the tank. Nothing but. No issues.

The reason, I feel, why I've suddenly seen "spread", is that my tank was near empty, it was parked in the sun, and I rode about 40 miles home on a 93 day.

I don't see how adding a 10% mixture of alcohol to gasoline, would affect the plastic any more than regular gasoline.

But, that's just my opinion. I'm not a chemist.
This just shows how difficult it is to definitely pinpoint the cause. You think yours happened suddenly from parking in the sun with a near empty tank, and to me your pics support the suddeness because it's hard to see how you could've failed to notice so much spreading if it'd been gradual.

But another member who's been one of the lucky ones and hasn't had a spreader thinks it's from letting the bike sit too much with a full tank!

The only constants seem to be that the problem is confined to North America (maybe just the US?), and that everyone who's had the problem uses ethanol gas.

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post #29 of 53 (permalink) Old Apr 9th, 2010, 11:34 am Thread Starter
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Quote:
Originally Posted by Cesare57 View Post
This just shows how difficult it is to definitely pinpoint the cause. You think yours happened suddenly from parking in the sun with a near empty tank, and to me your pics support the suddeness because it's hard to see how you could've failed to notice so much spreading if it'd been gradual.

But another member who's been one of the lucky ones and hasn't had a spreader thinks it's from letting the bike sit too much with a full tank!

The only constants seem to be that the problem is confined to North America (maybe just the US?), and that everyone who's had the problem uses ethanol gas.
That's the thing... my bike sat for probably a month and a half with a full tank in the parking lot of my apartment over the winter. No spread at all.

Because of the spready issues people report, I've always been looking for it. I can guage it almost every day, when I back into my parking spot, as I have to turn the bars full left and full right, to park the bike. A few days ago was the first time I'd noticed it. The only things that "changed", was the fact that the temps were in the 90's, and the bike was parked in the hot sun with an empty tank.

Yesterday, the tank was still loose, but not nearly as "spread". Temps today are in the 50's, and I have a full tank. I'll take a photo when I get home, as I drove the truck today. It's raining.

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post #30 of 53 (permalink) Old Apr 9th, 2010, 11:48 am
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STA-BIL 22239 Marine Fuel Stabilizer

Quote:
Originally Posted by geospencer View Post
...

Stabil also makes a marine fuel treatment. It is different from the regular Stabil that we sometimes use when we store our cars/motorcycles for the winter. I have been told that you need that you need one of the marine treatments to deal with ethanol.
I just started using STA-BIL Marine Fuel Stabilizer in my fuel ($9 bucks at your local Pep Boys) to curb the tank spreading. It has been two days in the tank and so far, it is working. The tank has stopped spreading and is going back to its original shape, little by little. The front rubber snubs are starting to seat into the mounting cups.

I'll be riding out in the sun over the weekend and I'll report back on how the SoCal sun and heat affects the tank and fuel stabilizer. Hopefully positive results.

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