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Lets talk Under coating / Rust Prevention

Discussion in '5th Gen 4Runners (2010+)' started by Jmb0351, Oct 9, 2019.

  1. Oct 9, 2019 at 6:44 AM
    #1
    Jmb0351

    Jmb0351 [OP] New Member

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    So I just got a thing in the mail for my 2016 Tacoma that was totaled out back in July. Regarding problems with Frame Corrosion?? Well Obviously I don't have to worry about it since truck is gone. But it was replaced with a new 2019 4Runner.
    And I live in Central Illinois so we get snow and massive amounts of Salt on the road!!

    Whats the best undercoating for rust prevention?? What do you guys out in the North East use? I want to protect my baby!

    And why have they had such problems with the Tacoma's and rusty frames but not other models?? Seems like you never hear of it on 4Runners....

    Thanks for any info, Im kind of new here but everyone is super Helpful : )
     
  2. Oct 9, 2019 at 7:21 AM
    #2
    Benny123

    Benny123 Long term owner

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    Charlotte, NC
    Vehicle:
    2007 V6 SR5 4WD Galactic Gray Mica
    Stock
    Definitely rust issues with 4th gens. I used POR15 on mine after the wire wheel. Came out great. Buy a quart minimum and hit frame, lcas, rear end, spare tire area etc. Dont do the bolt heads, makes them harder to remove.

    Glove up and wear old clothes. Its thick and does not come off skin easily.
     
    Last edited: Oct 9, 2019
    Jmb0351 [OP] likes this.
  3. Oct 9, 2019 at 7:28 AM
    #3
    SlvrSlug

    SlvrSlug New Member

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    San Diego, Ca.
    Vehicle:
    2017 4-Runner SR-5
    Slightly modded
    I have seen a lot of good reviews on Fluid Film from this forum.
     
    WallyT4R and Jmb0351 [OP] like this.
  4. Oct 9, 2019 at 12:09 PM
    #4
    PrettyGoodSam

    PrettyGoodSam New Member

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    Philadelphia
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    i need to wire wheel a couple of spots and repaint/seal. after that i plan on using fluid film on the undercarriage probably by months end.
     
    Jmb0351 [OP] likes this.
  5. Oct 14, 2019 at 7:26 PM
    #5
    Metalman73

    Metalman73 New Member

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    Fluid Fild works great at preventing rust and keeping the under carriage looking new. Smells awful though.
     
    Jmb0351 [OP] likes this.
  6. Oct 15, 2019 at 4:48 AM
    #6
    DoubleRGirl

    DoubleRGirl New Member

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    working on it
    I know a lot of people use fluid film. I go to a place in nh that makes their own stuff that seems to be a little thicker. But I think anything is going to be better than nothing
     
    Jmb0351 [OP] likes this.
  7. Oct 15, 2019 at 7:42 AM
    #7
    PrettyGoodSam

    PrettyGoodSam New Member

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    2012 4Runner Trail
    wire wheeled a bunch of surface rust off yesterday. cleaned up the areas and used black undercarriage spray paint on the areas. fluid film is the next step. probably next week. gonna be a mess im sure haha
     
    Jmb0351 [OP] likes this.
  8. Oct 15, 2019 at 9:36 PM
    #8
    WallyT4R

    WallyT4R New Member

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    I use fluid film. Have applied it twice myself two years in a row. No rust at all underneath. I am going to not do it this year and see if I can do it every other year.
     
    Jmb0351 [OP] likes this.
  9. Oct 16, 2019 at 9:12 PM
    #9
    RC84

    RC84 New Member

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    Kansas City
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    2010 4runner Trail & 2019 Tacoma Trd OR
    Trd Pro Bilstein with 14" 600 lb springs Fox 2.0 resi with Toytec Superflex springs 17 x 8.5 SCS F5 wheels 255 80 17 Cooper ST Max
    I also vouch for fluid film.

    Here's a 10 year old vehicle with regular fluid film applications.

    20191015_155113.jpg 20191015_155147.jpg 20191015_155135.jpg 20191013_171122.jpg 20191013_171055.jpg 20191013_171020.jpg
     
  10. Oct 17, 2019 at 12:35 PM
    #10
    Jmb0351

    Jmb0351 [OP] New Member

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    Thanks! Sounds like Fluid Film is the way to go! Try and get a coat on before the snow flies
     
    WallyT4R likes this.
  11. Oct 17, 2019 at 12:51 PM
    #11
    RC84

    RC84 New Member

    Joined:
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    Member:
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    Messages:
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    Gender:
    Male
    Kansas City
    Vehicle:
    2010 4runner Trail & 2019 Tacoma Trd OR
    Trd Pro Bilstein with 14" 600 lb springs Fox 2.0 resi with Toytec Superflex springs 17 x 8.5 SCS F5 wheels 255 80 17 Cooper ST Max

    I've been using it for years on all my vehicles.

    Start off by hitting all of the hard to reach places...crawling under the car. It makes the process easier if you jack up the car and remove wheels but not necessary. I also make sure to hit up any holes in the frame etc. Then do a nice even spray on the larger easier to reach areas. Entire process takes me around 30-40 min + 3-4 cans of fluid film.
     
    WallyT4R and Jmb0351 [OP] like this.

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