POR15 in gas tanks

I make no bones about it, I don't like POR15 anyways. I've tried it, I've known plenty of other folks that have tried it, and we've all had lousy results with it. If the base material isn't solid, the stuff just peels off. It's like painting the beach to hold the sand in place.

There's just no reasonable way of getting a gas tank clean enough to make POR15 solidly adhere to it. That's why all the tank repair kits have those etching compounds, to get solid adhesion. Dumping POR15 into a rusty dirty old tank and hoping it will stick just doesn't cut it.

POR 15: I've had some minor problems with POR 15 flaking off. So, I'm careful where and how it is used. I use it now on interior surfaces (undernetath the steering column, behind the dash, underneath the transmission cover, inside the brake drum surfaces (except where brake shoes rub of course), underneath the chassis, inside the hood, inside the lower hood side pieces, interior of rims and hubs...everyplace that seems to collect water or places where water tends to run inside and sit etc. etc.).

I never liked the claim of painting right over rust. Seems like it's a band-aid. So I sand- blasted and or grinded and sanded the rust, then used zinc phosphate to neutraliz and etch, then applied the POR 15. When I did that...it seemed to adhere pretty good...but in some places...it still seemed to flake off, and this is a concern. Other places, it was just like glue. I called the company and they highly recommended that the zinc phosphate be washed off before applying the POR 15(and in my case, I was not always that careful with that step...so I suspect that's where it flaked off...who knows).

SO, with POR 15 there seems to be some element of "trickiness" to get it right and to adhere. The next thing...is to get paint to adhere to the POR 15.

Applying their tie-coat primer when the POR 15 is curing but not all the way...but with a slight finger drag to it...seems to be the trick. When I let the POR 15 sit for a day or two...it was like a plastic/glossy/film...and it needed to be scuffed. So far...so good for me...but time will be the acid test for this. If Nolan and his experiences with POR 15 turn out to be true for me, I'll wish that I knew beforehand and knew about others' disatisfaction with the product. Live and learn is the old saying....but I am now watching it with a slight raised eyebrow...keeping my fingers crossed..hoping for the best. -9N'er

I used the Marine-clean like the instructions said. I left it in the tank probably longer than I needed to but time was on my side. It was cold and I didn't need the tractor right then any way. The Metal Ready that I pored in was to disolve the rust and coat the tank with zinc phosphate.

The Instructions said Before puting the Tank Sealer in to Make Sure the tank was ABSCLUTELY dry. I used a hair dryer rigged so it blew in the opening for a couple of days ( I know it was Dry).

After the sealer was in the tank. I hooked the hair dryer to it again and I let it run for a nother couple of days.. This may seem like a long time but time was on my side.

So If the tank is prepaired correctly the Product will work as it is entended.

I think the Product worked Great. No one is paying me to say this . Humm! maybe I should be a Sales Rep.

Now that's My Two Cents Worth.
Jess