Gas gauge - trying to seal it good

[29UJohn]

We moved to the Birmingham Alabama area to be closer to our oldest daughter. We live on top of a hill with a steep drive. My gas tank gauge leaked every time I drive up the hill, so have been trying to seal it better. I have found a supplier of vitriol gasket material that is impervious to gas. I am trying that with some fuel resistant Permatex MotoSeal gasket maker and a newer product Permatex Permashield gasket dressing.

My original tank had a long neck supporting the gas gauge and leaking was not a problem, but I had to replace that tank many years ago.

Anyone else have this issue and solved it?

[Touring29]

If a surface is rough I have used JB Weld to fill it in. I put waxed paper on a flat plate or just waxed the plate and screwed it down with the epoxy between the plate and the rough surface. Let it cure and when it's hard remove the plate smooth up the edges with a file. Then it will hold a gasket a lot better. I had to do both sides of my thermostat housing and water neck that way. If your gas gauge doesn't seal with what you have this might be a idea. Our car has no gauge just a plate blocking the hole. I have thought about trying to fit a boat gas tank gauge in there but think about it is as far as I have got. 

[chetbrz]

John,

There is some info at the bottom of this report that details what I did to get the gauge working without leeks.

see link to info: >>>  Feb 14, 2020

Chet...

[Russ T. Fender]

I used fairly thick cork gasket material liberally soaked in shellack to stop my gas gauge from leaking. I tightened it down slowly over a few days and no leaks so far.