Ethanol/phase separation/water adsorption/rust in gas tank. - GSXR.com
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post #1 of 12 (permalink) Old 03-22-2019, 09:41 PM Thread Starter
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Ethanol/phase separation/water adsorption/rust in gas tank.

Is it (see post title) preventable? Ethanol-free gas is not available in my area (that I have been able to find) and everything is E10. I use a few ounces of Chevron Techron nearly every tank fill-up just to (hopefully) help keep injectors clean; I’ve heard Seafoam is better but don’t know (it’s a bit like talking about oil, politics or religion). Of course, these are fuel system cleaners but I don’t know that they are effective for helping to keep ethanol from absorbing water (prolly nyet). What I would also like to do is keep rust out of my fuel system.

Sta-Bil Storage is a great product for keeping fuel good. This is something I do know because I’ve used it for years and never have trouble restarting lawn equipment after it has been sitting in storage over the winter months. When I don’t use it I have lots of trouble getting equipment to run.
There’s also Sta-Bil 360, which I did not know about until very recently (as in today). Their ‘more info’ section states, among other things:

STA-BIL 360˚® Protection is America’s most preferred Ethanol Treatment. Engineered to fight the harmful effects caused by today’s fuels, our revolutionary formula has been engineered to be the only fuel additive you need. Use it with every fill up to help keep your engine running cleaner, leaner, smoother and stronger.
PREVENT ETHANOL DAMAGE: Protect your fuel system against damaging rust and corrosion caused by moisture and ethanol fuels.

Other ‘more info’ suggests that it pretty much also does what the Techron or Seafoam cleaners claim to do, so shouldn’t need them if using the Sta-Bil 360. K100 Fuel Treatment claims to prevent (or really delay) phase separation.

Thoughts on using these kinds of products in FI GSXR engines? Helpful? Harmful? Snake oil?

I know some things about some things but I don't know jack about a whole lot more.
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post #2 of 12 (permalink) Old 03-22-2019, 10:15 PM Thread Starter
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My bad, meant absorption not adsorption.

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post #3 of 12 (permalink) Old 03-22-2019, 10:52 PM
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really depends on how fast you burn a tank out. I burn a tank a day, so I'll run some through every other month, but I've used Seafoam, and Sta-Bil, both seem to work pretty good. Sta-Bil does better for storing fuel, and Seafoam I like to run it to clean the system out with while running. Far as running it, never had an issue with it, just keep the amount per gallon good and you'll be fine.
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post #4 of 12 (permalink) Old 03-23-2019, 01:35 AM
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Ethanol really does suck as a motor fuel but iy looks like we
re stuck with it for the time being.
If you use Seafoam and Sta-Bil per the directions I don't think you'll have any problems.
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post #5 of 12 (permalink) Old 03-23-2019, 07:15 AM Thread Starter
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Originally Posted by Vader225 View Post
really depends on how fast you burn a tank out. I burn a tank a day, so I'll run some through every other month, but I've used Seafoam, and Sta-Bil, both seem to work pretty good. Sta-Bil does better for storing fuel, and Seafoam I like to run it to clean the system out with while running. Far as running it, never had an issue with it, just keep the amount per gallon good and you'll be fine.
I'm running a tank a week when commuting to work and running through a tank a day on riding days. The Sta-Bil Storage is the kind I have used for years but the Sta-Bil 360 appears to be specially formulated for ethanol treatment. If I can't find the 360 local I'm going to order it from the mfgr and try it instead of the Storage kind.

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post #6 of 12 (permalink) Old 03-23-2019, 10:26 PM
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Originally Posted by HydeWhyte View Post
I'm running a tank a week when commuting to work and running through a tank a day on riding days. The Sta-Bil Storage is the kind I have used for years but the Sta-Bil 360 appears to be specially formulated for ethanol treatment. If I can't find the 360 local I'm going to order it from the mfgr and try it instead of the Storage kind.
Hmm let me know how you like it. I've been just using the high traffic gas stations so I get fresh gas hopefully before the ethanol degrades, it's working so far, but ethanol really does suck for engines nowadays. If it makes a big difference for you I'll run it too.
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post #7 of 12 (permalink) Old 03-24-2019, 02:26 PM Thread Starter
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Hmm let me know how you like it. I've been just using the high traffic gas stations so I get fresh gas hopefully before the ethanol degrades, it's working so far, but ethanol really does suck for engines nowadays. If it makes a big difference for you I'll run it too.
I only use the better name brand stations (mostly Exxon, Chevron & Shell). They probably buy the same gas as the small independent stations but I figure they're less likely to be adding water to their tanks as some stations have been known to do.

Found a couple of bottles of the 360 & added the first 1oz to a fresh fill-up yesterday. Haven't noticed any difference in how the engine runs but hopefully it will help keep my tank from rusting inside like I've heard so many others say has happened to their bikes.

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post #8 of 12 (permalink) Old 03-27-2019, 04:51 AM Thread Starter
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Woohoo just found out a new gas-station in town has ethanol-free premium! Better than compensating with a fuel additive and it's on my route to work! It's hard to put a finger on any difference in how the bike runs with the Sta-Bil 360 but sometimes I wonder if I'm hearing a small difference in tone from it.

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post #9 of 12 (permalink) Old 03-27-2019, 01:26 PM
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Quote:
Originally Posted by HydeWhyte View Post
Woohoo just found out a new gas-station in town has ethanol-free premium! Better than compensating with a fuel additive and it's on my route to work! It's hard to put a finger on any difference in how the bike runs with the Sta-Bil 360 but sometimes I wonder if I'm hearing a small difference in tone from it.


Good find. Much easier to just throw real gas in than to mess around with additives. When I sold my k7 600 earlier this year, there was not a spot of rust or dirt in the tank - I never put ethanol tainted fuel in it.


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post #10 of 12 (permalink) Old 03-27-2019, 07:09 PM Thread Starter
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Good find. Much easier to just throw real gas in than to mess around with additives. When I sold my k7 600 earlier this year, there was not a spot of rust or dirt in the tank - I never put ethanol tainted fuel in it.
I only considered additives because until recently the nearest ethanol-free station was 60 miles away. Now that this new one has been built (it's only been open about a month) I will get all my gas there unless I'm in a place where I just have to get what's available.

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post #11 of 12 (permalink) Old 03-28-2019, 05:09 AM
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I've seen a lot of rusty tank posts across all the forums I'm a part of. Tanks are lined and shouldn't rust. The few rusty tanks I've seen personally had marks where the liner had been compromised by the fuel nozzle being inserted so far it hit the bottom. One so hard it left a dent. So be mindful of this.
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post #12 of 12 (permalink) Old 03-28-2019, 06:51 PM Thread Starter
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I've seen a lot of rusty tank posts across all the forums I'm a part of. Tanks are lined and shouldn't rust. The few rusty tanks I've seen personally had marks where the liner had been compromised by the fuel nozzle being inserted so far it hit the bottom. One so hard it left a dent. So be mindful of this.
I've seen the rusty tank posts too. Didn't realize the tanks are lined & ASSumed the rust was simply a result of water absorbed by ethanol. My bad. On the nozzle, yeah, I am very careful there and only let it lightly touch the rim when I'm not steady enough to keep it centered in the opening. And dripping gas on the paint is avoided too.

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