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Old 10-31-2018, 09:52 PM   #1
Driven85
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Plastic tanks and ethanol

Just wanted some input from you guys regarding plastic tanks and ethanol. Anyone have coating experience? Or just use stabilizers? I have a tank that has expanded quite a bit and I purchased a brand new tank and trying to decide what course to take with it.
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Old 11-01-2018, 07:31 AM   #2
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Run non ethanol fuel.
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Old 11-01-2018, 08:00 AM   #3
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Here is the compatibility for the materials:

Alcohols: Ethyl
Material: Plastic

B(1) - Good: Minor Effect, slight corrosion, or discoloration. Satisfactory to 72F.
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Old 11-01-2018, 08:20 PM   #4
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Caswell coatings
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Old 11-01-2018, 08:45 PM   #5
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Originally Posted by SpeedTrip955i View Post
Caswell coatings
I picked up an 07 monster and just got a new tank. Their tanks are nylon and I am trying to decide if I should attempt to coast it with Caswelling or just leave little fuel and stabilizer in it.
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Old 11-01-2018, 09:13 PM   #6
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I coated my new Speed Triple tank(MY2000) and think it's the only way to go. Ethanol sucks
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Old 11-02-2018, 09:00 AM   #7
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I used Caswell on my new Aprilia tank as the old one expanded due to the ethanol.
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Old 11-02-2018, 09:19 AM   #8
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Have you guys had any issues with the coating? I've heard people say it can peel and ruin your fuel system. How long have your tanks been coated? Would you definitely recommend?
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Old 11-06-2018, 11:18 PM   #9
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My tank expanded so I made an adjustable bracket to alow for expansion..
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Old 11-07-2018, 08:49 PM   #10
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Quote:
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Have you guys had any issues with the coating? I've heard people say it can peel and ruin your fuel system. How long have your tanks been coated? Would you definitely recommend?
It's been a couple years now. The stuff is like glass, not the old "Creem"
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Old 11-07-2018, 09:12 PM   #11
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Fuel stabilizer won't stop ethanol from making the tank swell.
Lining the tank is risky. If it is done RIGHT, it'll probably be ok. You have to ask yourself, are you going to do it right? Can you do it right?

Then ya gotta wonder, how long, will a coating last? Forever? Will it someday start to come unstuck?
What if the tank gets dented or just gets a hard enough impact to make it flex?

The only long term solution, IMHO, is non-ethanol gas. It's a pain, but it's available. Small towns away from big cities still sell it. There is an easier but more expensive option, race gas.
Your idea of keeping the tank nearly empty will help. That's what I did with my Ducati, along with non-ethanol gas I bought in east Texas.

The problem is American gas. In Europe they don't use ethanol so the plastic tanks work fine. The mfr's just sell the same tanks here that they do in Europe but downplay what our gas does to them.

Ducati got sued and lost. They had to replace tanks on certain bikes up to a certain date. That's all expired so you are left on your own.
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Old 11-08-2018, 03:50 PM   #12
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I've got the same swelling issues on both the '06 Triumph Sprints I've had. Slotting the rear mount so it fits a little better is something I hadn't really considered, but I'll take a look at it tonight.
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Old 11-08-2018, 07:05 PM   #13
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Quote:
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I've got the same swelling issues on both the '06 Triumph Sprints I've had. Slotting the rear mount so it fits a little better is something I hadn't really considered, but I'll take a look at it tonight.
In essence what I did... Works great
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Old 11-19-2018, 02:26 PM   #14
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is there no proper ventilation system built into the tank? I'd imagine if there were then there wouldn't be a problem with fuel vaporization causing expansion, but Id also think it would interfere with electronics on newer bikes. I don't think an internal tank liner would prevent expansion, you might have better luck insulating the outside of the tank from heat using some kind of heat shield with an insulating layer and foil on the outside. vapor-lock was an issue with my bike until I lined the bottom of the tank with heat shield
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Old 11-19-2018, 03:11 PM   #15
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Quote:
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is there no proper ventilation system built into the tank? I'd imagine if there were then there wouldn't be a problem with fuel vaporization causing expansion, but Id also think it would interfere with electronics on newer bikes. I don't think an internal tank liner would prevent expansion, you might have better luck insulating the outside of the tank from heat using some kind of heat shield with an insulating layer and foil on the outside. vapor-lock was an issue with my bike until I lined the bottom of the tank with heat shield
It's not a pressure issue. The ethanol attracts water out of the air. The water in the fuel reacts with the plastic and causes it to swell.
In fact, in many cases if you drain the tank and let it air out for several weeks, in a dry environment, it will shrink back down to pretty much it's original size.
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Old 11-20-2018, 06:48 AM   #16
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I own a Boat Repair Business and Ethanol is the number 1 cause of Fuel tank expansion, grabbing water from the vent system and collecting, fuel line break down, sheening of filters and build up in cabs and injectors. I use a product and only product I sell is Liquid performance Ethanol Equalizer. It's the only product I have found that reduces the effects dramatically. here is a link below to you tube video. It also breaks down any water and will allow it to pass thru and burn off. It does work! Ive been a dealer of the products for 4 years now and it has out performed anything I have tried in the last 10 years hands down. Just don't over dose!

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Old 11-20-2018, 09:09 PM   #17
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Ive been a dealer of the products for 4 years now and it has out performed anything I have tried in the last 10 years hands down. Just don't over dose.
So what happens if you overdose?
And.. How much do you sell the 32oz bottles for.. And where are you located.. Etc
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Old 11-21-2018, 09:10 AM   #18
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It will dry out fuel lines if over dosed, not immediately! My shop is located in Bacliff off 146 and 646. (Boat Werx of Texas) we sell the 32oz bottles for $29.99. I am currently out of the 32oz, but can do 8 of the 4oz for same cost.
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So what happens if you overdose?
And.. How much do you sell the 32oz bottles for.. And where are you located.. Etc
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Old 11-21-2018, 02:34 PM   #19
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I swapped my tank and may want to pick up some of this magic. Are hours posted online for us to stop by?
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Old 11-21-2018, 03:20 PM   #20
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yes, we are closed after 5 today until Monday. then M-F 8-5 and Saturday 9-10am
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I swapped my tank and may want to pick up some of this magic. Are hours posted online for us to stop by?
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