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Anyone undercoat their truck with POR 15?

Discussion in 'Truck & Equipment Repair' started by turbo38sfi, Nov 5, 2009.

  1. turbo38sfi

    turbo38sfi Senior Member
    Messages: 289

    Picking up a new truck and would like to undercoat before it hits the road.

    I've used Fluidfilm on the plow before..and the stuff wears off. I want something I don't have to reapply.

    Anyone used POR 15 before? If so, how much did it take to undercoat the underside of a truck? How has it held up. The stuff is supposed to be hard as nails and hold up forever....
  2. basher

    basher PlowSite Fanatic
    from 19707
    Messages: 8,993

    I've used it on frames and other parts in restoration projects and to coat the inside of rusty MC tanks. works great, it's hard as he!! and won't come off with any short of heat or a grinder once its cured.

    Prep work on the truck could be a real lassie. As with most paint projects preparation is critical. I just happen to have the link

  3. grandview

    grandview PlowSite Fanatic
    Messages: 14,609

    FF will come off the plow. give the underneath of the truck a good coating of FF
  4. turbo38sfi

    turbo38sfi Senior Member
    Messages: 289

    That's what I was thinking..since the truck will be new, just spray with their metal etching treatment to used on bare or new metal surfaces and go over with the paint...perfect opportunity to do it.
  5. basher

    basher PlowSite Fanatic
    from 19707
    Messages: 8,993

    Beware of plastic fuel lines, wire harness, etc........
  6. no lead

    no lead PlowSite.com Addict
    Messages: 1,308

    depends on the truck. the chevys are already coated from gm.
  7. turbo38sfi

    turbo38sfi Senior Member
    Messages: 289

    Not up inside bumpers and underside of bed etc...

    Why would FF come off say the plow frame but no come off inside wheel wells??
  8. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    If you do the POR15, I would pull the bed. You will be able to do a better job, faster.

    I would think the etch product would be perfect on a new frame.
  9. turbo38sfi

    turbo38sfi Senior Member
    Messages: 289

    Pulling the bed would be the way to go, but not sure I want to get into that..figure just put it up on the lift and spray away!
  10. deere615

    deere615 2000 Club Member
    Messages: 2,919

    My buddy who tore his 97f150 all apart and is putting it back together used that stuff. Man its tough stuff doesn't chip. Me I just use rubberized under coating
  11. turbo38sfi

    turbo38sfi Senior Member
    Messages: 289

    I figure it's the same amount of work effort. What kind of under coat do you use?
  12. KingDuramax

    KingDuramax Senior Member
    Messages: 226

    Por15 peels off paint it must go on bare metal. So coating the under side of the bed is wasteing your money. I mix used engine oil and wheelbearing grease then spray it on with a garden sprayer. Sticks good. I even do the inside of the doors and tailgate. It will drip for awhile so park on gravel.
  13. 2COR517

    2COR517 PlowSite Fanatic
    Messages: 7,115

    To do POR correctly, you would really need to pull your wiring harness, fuel and brake lines. Drop the tank. Easier than it sounds, especially on a brand new truck, with the bed off. I would rather do that work looking down, than looking up.

    The other options is to just pound the FF to it a couple times a year.
  14. deere615

    deere615 2000 Club Member
    Messages: 2,919

    No probably more work its alot easier to just spray stuff out of a can than do all the prep work for por15. I used cheap stuff last year this year I am usuing rust oleum professional rubberized undercoating. I was gunna try the 3m stuff to it looked pretty good
  15. ticki2

    ticki2 Senior Member
    from NH
    Messages: 175

    Por15 is a great product , but as stated before it is ment for bare or rusted metal . To use it over paint or undercoat would be a waste.There is also no good way to clean up over spray.
  16. racingmodracer

    racingmodracer Junior Member
    Messages: 7

    just did a 1962 dodge panel truck inside and out complete and found that you have to prep it just like they say. i took a short cut and it did not stick to the outside of the body and blew it all of with a air gun. it is a great product for rusted metal that is prepped properly. I did the frame in black after sandblasting it all and preping it per instructions and it looks very good and is very very hard:)
  17. eastcoastjava

    eastcoastjava Senior Member
    from Boston
    Messages: 165

    Sorry for reviving an old thread

    What prep work did you do, right now i am looking at puling my bed and scrapping as much of the rust as i can with a wire bursh/ wire wheels and scuff pads from there applying the por MARINE CLEAN then washing it all off. Next i would soak the metal with METAL READY and once again pressure wash and let it dry. Then paint with POR 15 and apply 2 coats. After that bedliner spray cans and finally a whole coat of Fluid film. I currently have some major rust not so much on the frame but most of my rear end has serious rust. Does this plan sound like it would work?

    Also i have heard that you shouldn't get it to a complete rust free surface because the POR-15 needs something to bond to?