Topic: Tank sealer

[Dreadnought]

Many brands my tank sealer I used about 5 years ago is starting to fail. Any consensus out there of the best on the market?

[Magpie]

I've used Por15 with good success.

[Slow2]

The best I’ve used is Caswell. But follow the instructions!!

[dusterdude]

I've used Por15 with good success.

Me too

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[RAFster122s]

Gotta follow POR’s instructions to the letter and tank needs to be bone dry before you use their sealer.

[pjandrew99]

I've tried both Red-Kote and Caswell. Both failed eventually but think I learned a few things. The Red-Kote failure was a tank that was very narrow toward the back. I believe the Red-Kote accumulated in that area and never set up. Still my fault but I didn't like the product.
Caswell was a little thicker than I thought it would be. Next time I will dilute it and use less. I liked it and would try it again.

[BenelliSEI]

The best I’ve used is Caswell. But follow the instructions!!

Only used it once, but worked well. Followed the instructions to the letter!

[rotortiller]

POR15 worked for me, I've got 7 years on it and it still looks like the day I did it. Rather than take any chances on other products I would use it again. Like anything someone will certainly manage to mess it up lol! 

[Stev-o]

I've tried both Red-Kote and Caswell. Both failed eventually...

My [old] painter talked me into using Caswell when the tank was painted, it failed a few years later.  Removed it and used Evaporust on the tank and it was fine afterwards.

Bottom line - unless your tank has pin holes in it, you may not need to line it and risk failure.

[carnivorous chicken]

I've used POR15 and Redkote with no issues. I've got a POR15 tank that's been going for maybe 20 years. But as others have pointed out, gotta follow directions to the letter, tank's gotta be bone dry before sealing.

[AMT]

A great way to make sure your tank is completely dry is to find a hair dryer with a nozzle that fits nicely in the fuel filler hole. Be careful with the amount of heat - low to medium works well, enough to feel the tank is warm to the touch. Let it run for while, 10-15 minutes and be sure that air is circulating out the bottom (petcock removed).

I recently did this to a tank I was prepping to coat with POR-15. It was so dry that I decided to let it sit overnight just to see if any flash rusting would occur. None did.. so I filled it with gas, put it back on the bike, and saved the POR kit for a future tank that has pin holes or more serious issues.