1. Welcome to PlowSite. Notice a fresh look and new features? It’s now easier to share photos and videos, find popular topics fast, and enjoy expanded user profiles. If you have any questions, click HELP at the top or bottom of any page, or send an email to help@plowsite.com. We welcome your feedback.

    Dismiss Notice


Discussion in 'Truck & Equipment Repair' started by icebreaker, Oct 6, 2014.

  1. icebreaker

    icebreaker Member
    Messages: 83

    Has anybody ever heard of krown rustproofing or actually use this product? What do you guys use out there
  2. snowish10

    snowish10 PlowSite.com Addict
    Messages: 1,093

    Por 15 works really well.
  3. icebreaker

    icebreaker Member
    Messages: 83

    Isn't that a paint though ? Looking for a rustproofing just didn't know if any of you guys use krown
  4. RS69

    RS69 Member
    Messages: 30

    See my post in the Chevy truck section, I sprayed my underside of my truck with used motor oil this year.
  5. r.renterprises

    r.renterprises Member
    Messages: 31

    Fluid film! This stuff works the rust thats started seamed to stop in its tracks
  6. Robinson_Cnst

    Robinson_Cnst Senior Member
    Messages: 146

    Fluid film. We are going to buy five gallon buckets and airless spray everything this year. After last winter I can't even use the tool boxes on my flatbed. I wish I would have sprayed them.
  7. Grassman09

    Grassman09 2000 Club Member
    Messages: 2,808

    I've used Krown. When my truck was new I had it done. I found it dried up pretty quick. The dealer that did it said he could spray it again but would charge me to do so. I went to Rust Check instead.
  8. snowish10

    snowish10 PlowSite.com Addict
    Messages: 1,093

    how has rust check worked for you? pros cons?
  9. bmc1025

    bmc1025 Member
    Messages: 41

    I bought 2 cases of krown after seeing a truck drivers 03 semi with no frame rust. I did a test on the vbox chains and shafts, they all rusted pretty quickly.

    Previous years I used fluid film with no issues and only sprayed the shafts and chains coupler once.
    Needless to say I'm only using fluid film from now on
  10. searay220

    searay220 Member
    Messages: 99

    I'm picking up the new 2500HD this weekend. Would you guys recommend applying some type of undercoating now while everything is new for added protection. On my 2006 2500HD the rust did some major damage to the undercarriage.
    What you suggest on using?
  11. secret_weapon

    secret_weapon Senior Member
    Messages: 437

    If your frame has that black waxy coating, fluid film will soften it and will wash of easy, leaving bare metal. I purchased Cosmoline, Rust Veto 342 waxy stuff to spray all over. www.cosmolinedirect.com

    http://waxoyl-usa.com/ Same type of wax coating

    My truck is black so it's not as noticeable, but I also spray the outside of the rockers along with everything underneath.
    Last edited: Oct 14, 2015
  12. PLOWDOC54

    PLOWDOC54 Junior Member
    Messages: 2

    Undercoating - Trucks & Equipment

    I've tried 7 or 8 different products over the years. I found Fluid Film to be on the thin side. The best performing product for me has been Cosmoline. I use the Cosmoline "Black Version" for my equipment and the 342 Industrial Grade Stuff for my Trucks. I get 2-3 seasons out of each. Not cheap, but I sleep well at night.
    Cosmoline Black - Asphaltic-Based Turns to Hard Rubber/Plastic
    342 Industrial Grade (Wax-Type)
  13. info4tim

    info4tim Senior Member
    Messages: 231

    Ditto x 1K. Follow instructions verbatim tho
  14. Ne1

    Ne1 Senior Member
    Messages: 370

    Pot 15 does work but like anything it has it's limits. Had a salt truck sand blasted and applied Por 15 to the frame and most of the underneath. It lasted about 2 seasons before it started to peel off.
  15. info4tim

    info4tim Senior Member
    Messages: 231

    It was not applied/prepped as per instructions. Period.
  16. searay220

    searay220 Member
    Messages: 99

    That Cosmoline Black sounds like good stuff. I'm taking delivery on a new 2015 Sierra next week and want make sure I have the best protection possible against rust. I will be plowing with the truck and live in New England where there is no shortage of salt on the roads. I'm interested in spraying everything that's exposed on the undercarriage.
  17. searay220

    searay220 Member
    Messages: 99

    Or would this be better??

    Cosmoline, Rust Veto 342 waxy stuff
  18. PLOWDOC54

    PLOWDOC54 Junior Member
    Messages: 2

    Regarding the Cosmoline Black, I've used it for years and it's the real deal. Also if you subscribe to their email newsletter, you might still get their October promotion. You can save 15% on any first-time order with the promo code "COSMO-OCT-15" at checkout. It adds up to a small chunk of change. Hope that helps.
  19. info4tim

    info4tim Senior Member
    Messages: 231

    May have a prob getting anything to stick on new, waxy coated frame. Maybe rough up n clean/degrease first? Congrats on new ride!
  20. searay220

    searay220 Member
    Messages: 99

    I could see that maybe being a problem with Cosmoline Black. What do think about Cosmoline, Rust Veto 342 waxy stuff being applied on top of the factory waxy stuff?