Aluminum Fuel Tanks ?

[TwoRivers]

I have two 93 gallon RDS aluminum fuel tanks built July 1988. They are not leaking or anything , just wondering what the lifespan of these tanks are ,and what $ I would be looking at to replace ? The boat has been in freshwater since the year 2000.
Thanks

 

[southshore30]

Hard to say with fresh water. Bottoms pitted at all? If so just do it. They are old. Ten to fifteen years in saltwater environment

 

[Duke]

Mine lasted 16 years before they (1) started leaking. The boat was kept in freshwater, however it was used in salt water. 2 new aluminum 60 gallon tanks from Luthers Welding in Providence cost about 2k with fittings.
Duke

 

[Crabman]

Depends where you are putting them. If it is a spot that is easy to get to and keep an eye on, use them. If it is under a deck, glassed in and a pita to replace, consider new over the hassle of replacing them later.

 

[TwoRivers]

Thanks Crabman,
I see you have a BHM. Mine is also a BHM 32 Flypointe circa 1989.