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Petrol V's Plastic Fuel Tank

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MVHeather View Drop Down
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    Posted: 03 Jun 2018 at 00:11
hi guy's
I have just been advised to replace my fuel tank as the bottom of it is becoming blistered and distorted, I have done so with a second hand good nick one I think but how do I help prevent this happening again?
Any one else had this problem?
Mine is a 2002 Millle R.
Cheers Mark
 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MVHeather Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2018 at 01:18
Ok just reading Diablo's post, so ETHANOL FREE unleaded is an issue for all then, boo hoo. Angry
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Diablo Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2018 at 01:26
Yes, how much ethanol do they add to premium fuels (97 oct) in New Zealand?

Try to find the fuel with the least in it. Free of the stuff if you can over there.

When you take the old tank off, leave the fuel cap open and put it somewhere warm and dry with ventilation for a few months. It will shrink back to an extent as it dries out. Takes months though, no quick fix.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MVHeather Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2018 at 02:56
thanks for the advise, will do as always good to have a spare tank!
I have and still am trying to find a % of Eth in the fuel here, I use BP 98 ron when I can but it has it I think, some of the cheeper fuel has up to 20% I do know that but I avoid that anyway.
  • Good to read ur post about Esso though as now know I am not alone, I though I was avoiding it altogether, how wrong was I then.......Unhappy
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Af1 Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2018 at 10:56
you can wash out the ethanol.


Easy to do with home made parts. The other way is to avoid leaving petrol in the tank long term. I have a few mx bikes from the '60's and 70's. The ethanol rots everything so when I use the bikes I remove petrol from the tanks and carbs. It stops the ethanol rot.
I do this with my 1934 singer le mans as well . It's a pain but it's better than worrying what ethanol will do to rare parts.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote redratbike Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2018 at 11:31
if yours is a 2000 model you can get a metal tank.... problem solved 


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Post Options Post Options   Thanks (0) Thanks(0)   Quote Careca Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2018 at 19:17
Given that this is a recurring problem for everyone, why keep making bikes with plastic tanks / parts susceptible to ethanol damage ?

I'd say its not fit for use myself .

That said none of my bikes has/ has ever had a plastic tank. Not a proper bike imho with a plastic tank, but what do I know.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MVHeather Quote  Post ReplyReply Direct Link To This Post Posted: 03 Jun 2018 at 22:10
ya I think that was my problem, we have a wet winter so usually have it unreg’d off the road for about 4 months. I was leaving fuel in the tank, now going to avoid that.  It’s an expensive problem! 
Thanks for the link. 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Careca Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jun 2018 at 19:30
Does additives like Stabil or Sea Foam stop it happening ?

They are fuel stabilizers. 
Also in the July issue of Practical Sportsbikes there is a 3 page article on fuel and the issues of ethanol.
They say that Esso synergy supreme+ has NO ethanol ( except in Devon, Cornwall, Teeside or Scotland )
They also say Shell V power, Tesco 99 and BP ultimate are ethanol free depending where you buy it.

Otherwise you can go to Aspen fuels and have it delivered to you . Might not be practical, just trying to help .

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Andy Higham Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jun 2018 at 20:51
The problem isn't the ethanol as such but the moisture that it attracts from the air.
The plastic used to make some tanks absorbs water and swells
The water causes corrosion on alloy and steel parts
Some varieties of rubber are affected by ethanol
"washing" the ethanol out of fuel will drop the octane rating to something closer to 90

If laying up a bike for winter drain the tank, ideally after running on fresh fuel

Ethanol in fuel is a god send for snake oil salesmen
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Post Options Post Options   Thanks (0) Thanks(0)   Quote IanG Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jun 2018 at 22:23
A plague on the tree huggers and their houses LOL

Bring back the leaded 5* and now I think about it paint is sh*te these days since the lead removal

Like these large windfarms springing up all over due to 'modern,enlightened thinking' most of which are thinly disguised scams playing on environmental worries whilst letting the rich get even richer at the expense of the rest.

And while I'm having a moan....

Flew back into Manchester airport earlier this morning to transport chaos resulting from tarmacing and road closures all over the site which are part of a new transport initiative there.

Apparently very shortly it won't be possible to just drop someone off or pick them up for free as there will be pay barriers to stop any access to the site and a strict no stopping regime locally.

At a rumoured £4 charge ( local park & drive info) they should be well on their way to making millions shortly and nothing the flying public can do short of going by rail.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tifa Quote  Post ReplyReply Direct Link To This Post Posted: 05 Jun 2018 at 09:42
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