fuel tank replacement Do I need some rub relief?

[troutski]

Hi there, replacing both tanks on an '84 F-250 Went with new poly tanks from TRex. Old set up had some kind of canvas like material at the rub points. It that necessary to replace? If so, what material would one use that will hold up and not rot?

Thanks.
Mark

 

[u2slow]

I have use old (or new) bicycle inner tube in the past. Anything similar should work. More important on a metal tank IMO. Dodge doesn't seem to use anything on their factory plastic tanks - or its long gone by the time I own them Lol!

 

[troutski]

Thanks for that info. One difference that brought up the question is that the rear tank I took out was supported by the seam in the steel. The new poly tank sits right on the skid plate. Could be time for some wood to support it and snug it down,

Mark