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#94256 - 06/16/06 12:42 am How to remove fuel stain on painted fuel tank?  
Joined: Feb 2006
Posts: 1,095
Matthew in TO Offline
BritBike Forum member
Matthew in TO  Offline
BritBike Forum member

Joined: Feb 2006
Posts: 1,095
Toronto, Ontario, Canada
When I got my 1970 T100S I noticed some fuel staining around the fuel cap. Now, when riding with a full tank, I seem to be getting some fuel passing the cap, and spilling down the outside of the tank. By the time I get home and notice, the fuel has dried onto the paint, causing a stain.

Lesson learned here is not to fill the tank so close to the top, but now I need help to remove the fuel stains. I've tried dishwashing liquid, car wash soap (one of those green biodegradeable ones), but neither is making the slightest difference. I can't know the grade of paint used, but can't accept that fuel spilt on the tank would cause permament staining so quickly without extended sun exposure.

Please help if you can, cheers.


1970 Triumph T100S (1969 T100S motor)
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#94257 - 06/16/06 1:06 am Re: How to remove fuel stain on painted fuel tank?  
Joined: Dec 2004
Posts: 1,280
Skeet Offline
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Skeet  Offline
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Joined: Dec 2004
Posts: 1,280
Orleans Massachusetts
Matt,
First of all get a new cork gasket. Get 2 and have a spare They are inexpensive. Also don't be afraid to really tighten down on the gas cap. You won't break it. As for the stains a good quality auto polish sometimes will work wonders in blending things back. I'm sure others will have some ideas also and look forward to their comments so I can learn also.
Skeet


Skeet Enjoy life....it has an expiration date..
1964 Hornet
1970 TR6R
1971 Norton
1972 XLH
#94258 - 06/16/06 9:51 am Re: How to remove fuel stain on painted fuel tank?  
Joined: Oct 2004
Posts: 4,429
Tiger Offline
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Tiger  Offline
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Joined: Oct 2004
Posts: 4,429
Melbourne Australia
Ditto what Skeet said.
I have found that methylated spirits gets fuel stains off carbs and such with little effort.
If you have to use polish resist the temptation to go at it hard with a rag covered findertip, better to ball up a piece of old cotton tee-shirt and work over the whole area.


1969 TR6R
7.62 x 51 is not a maths puzzle.
#94259 - 06/16/06 11:51 am Re: How to remove fuel stain on painted fuel tank?  
Joined: Dec 2004
Posts: 8,889
kommando Online content
kommando  Online Content


Joined: Dec 2004
Posts: 8,889
Scotland
Whatever you use (acetone is also good), try it out on the unseen underneath of the tank first so that you can check it does not destroy the paint.

#94260 - 06/16/06 1:36 pm Re: How to remove fuel stain on painted fuel tank?  
Joined: Oct 2004
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Tiger Offline
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Tiger  Offline
BritBike Forum member

Joined: Oct 2004
Posts: 4,429
Melbourne Australia
Just thinking that body shop blokes use stuff called Prepsol, will not harm paint and works a treat.
Having mates in that trade I can pretty much guarantee that a six pack on a Friday afternoon will get the job done laugh
Then wax the tank.


1969 TR6R
7.62 x 51 is not a maths puzzle.
#94261 - 06/16/06 2:17 pm Re: How to remove fuel stain on painted fuel tank?  
Joined: Sep 2005
Posts: 14
sep183 Offline
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sep183  Offline
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Joined: Sep 2005
Posts: 14
long island
i seem to remember reading that petrol may pass under the paint where the tank seals against the cork gasket in gas cap.i believe it was recommended to remove paint from the surface which contacts cork gasket.i have this problem and avoid topping off.paint is still there,so at end of season,i'll try this remedy.


78 triumph t140v
02 ducati ms4
05 vespa px150
#94262 - 06/17/06 5:06 am Re: How to remove fuel stain on painted fuel tank?  
Joined: Jun 2002
Posts: 9,297
Stuart Offline
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Stuart  Offline
BritBike Forum member

Joined: Jun 2002
Posts: 9,297
Scotland
Hi Matthew,

Ime, depends on what's under the fuel stain.

Best case, the paint job was done properly and it's fuel-resistant clear lacquer; in this case, something like spray-on furniture polish, left for a few minutes then gently rubbed, will lift the stain.

Worst case, the paint's cellulose without any lacquer. Here, I use T-Cut, gently rubbed again. Problem is, you are lifting a minute amount of paint each time, so you'll gradually fade the paint 'til you're through to the undercoat. frown

Hth.

Regards,

#94263 - 06/17/06 11:44 am Re: How to remove fuel stain on painted fuel tank?  
Joined: Sep 2005
Posts: 1,997
T140V-Rich Offline
BritBike Forum member
T140V-Rich  Offline

BritBike Forum member

Joined: Sep 2005
Posts: 1,997
Sunny South Carolina, (US)
Huh. I don't think I can beat these ideas. I was going to suggest a cleaner auto wax.

But while Kommando mentioned it, to clean the gray Lucas switch wire covers, acetone is great. Thought I'd mention it when the acetone was brought up.

But like Skeet says, pick up a couple of gaskets next time you order or go to your bits dealer.

Richard


1977 T-140V
1973 T-140V
2011 Bonneville SE
Author of "Relics and Reminiscing."
#94264 - 06/17/06 12:19 pm Re: How to remove fuel stain on painted fuel tank?  
Joined: Feb 2006
Posts: 1,095
Matthew in TO Offline
BritBike Forum member
Matthew in TO  Offline
BritBike Forum member

Joined: Feb 2006
Posts: 1,095
Toronto, Ontario, Canada
Bought myself Meguiar's all in one paint cleaner and polish. It'ssafe for clear coats. Worked very well, with some moderate elbow grease I've got the gas stained out, and the tank looks great.


1970 Triumph T100S (1969 T100S motor)

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