Tanks and rust

[doitright]

I got the BB method down and it works great. But what can I do to keep the rust from coming back? I know that once there it will come back very easy. I have seen some costly gas tank coatings or is there a less costly method to keep the rust from coming back.
doitright

[High Desert]

POR15 makes a tank sealer that works really well by all reports but it costs a bit. The upside is one small can will do a bunch of lanterns. I got some from a friend but haven't had a chance to use it yet myself.

I'll see if i can find a link for it just for the record.

EDIT; here's the link. Not too bad for the small can, just takes a couple of teaspoons worth to do a lantern fount
http://www.por15.com/US-STANDARD-TANK-SEALER/productinfo/TSG/

[doug hodder]

I think I'd be concerned about the POR 15 getting into the air tube from the pump and sealing it, unless you just poured it in to coat the bottom. POR 15 requires you to pour it in a tank, then rotate the tank to coat all sides. It will fill holes, so the tube on the pump runs the risk of getting plugged.

I've only done automotive fuel tanks however. Doug

[Rock]

One technique used is to use an aquarium air pump to pump air into the pump tube (with the check valve removed is better) to keep a continous flow of air going into the tank. Should cure the sealant faster and will prevent the tube from getting blocked.

Eric

[doitright]

I have seen this product but never used it. I think it may become the #2 step of the rebuild. BB then por 15.
doitright

[High Desert]

Doug and Rock make good points. The people I know that use it mainly just use enough to coat the bottom and the lower edge & seam. Also make sure to have the F/A tube out. Rock's suggestion of an aquarian pump is a good one. It does speed up the cure time.

[Arne]

The bottom seam is the most important.... that is where the water would settle.

Also, take the pump out.... then do it.

[doug hodder]

One technique used is to use an aquarium air pump to pump air into the pump tube (with the check valve removed is better) to keep a continous flow of air going into the tank. Should cure the sealant faster and will prevent the tube from getting blocked.

Eric

Good tip! Doug