I just bought a 2003 4runner for a great deal but it was from NJ so ofcourse it has some undercarriage/engine rust. I been doing research on Por-15 and rust Bullet online and decided I will probably order Por-15 just because its tested over time.
My questions are:
1.) If I put it on my undercarriage would I need top coat paint so it is not destroyed by UV rays?
2.) How hard was it for others to coat as much of their undercarriages as possible?
3.) How much would I need to coat over frame, floor pans, and etc under my new 4runner?

Thanks in advance
Chris

I just bought a 2003 4runner for a great deal but it was from NJ so ofcourse it has some undercarriage/engine rust. I been doing research on Por-15 and rust Bullet online and decided I will probably order Por-15 just because its tested over time.
My questions are:
1.) If I put it on my undercarriage would I need top coat paint so it is not destroyed by UV rays?
2.) How hard was it for others to coat as much of their undercarriages as possible?
3.) How much would I need to coat over frame, floor pans, and etc under my new 4runner?

Thanks in advance
Chris


Bump--would like to know as well

I used a fare amount of por-15 in doing a restro on my ole Land Rover. It holds up well though a bit tricky to work with in comparison to other paints / coatings.

First off, it does not readily wash off your skin.... When and if you get a bit on your skin, you'll need to clean it off rite away or your have to wait till it wares away.
When you open up a can it starts reacting to the moisture in the air. You'll find that the viscosity will change as you go along and more so on humid days. It's no big deal, but found it better to order the small "cans / tins" of paint so I didn't have to fool with trying to seal the can back up so often....... The easiest way I found to save and to use from the same can of por-15 more than once was to cover it with a piece of grocery bag plastic, then tamp the lid back on. Then to reuse from it just pry the lid back off and cut through the plastic... Without the plastic separating the lid from the can, it'll be glued firmly in place.

If your painting a chassis and undersides, floor pans, and such, there's not need to top coat the por-15..... The undersides, axles, or what ever is not going to see enough sunlight to effect it that much to where it could be apparent.... Now If your applying por-15 to say an exterior part, yes,,, It would be best to top coat it. Oh, and to top coat por let it set-up a bit paint or spray it with a bit of etching primer then follow up with the color of your choosing.

Can't much really comment on doing a chassis with por for most my doings were with a bare frame and individual parts. Where I brush painted some of the smaller parts and sprayed others with por-15.

Coverage is good and will go a long way more so than I first though it would ,,,, Best I could advise would be to get the starter kit if they still sell one or buy like the small six-pack of POR-15 If I recall their 6 @ 8oz cans. Then have at it.

Will say the stuff holds up well and stays adhered like glue..... Here several years ago I was doing a few parts for the truck and had a small bit of por left over in the can.... I used up the last of it on the rusted gate hinges and handle of the side fence with no prep at all....and going on 4 yrs it still yet no sign of it deteriorating.

Best of fortune

Dave