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2017 Undercarriage Surface Rust

Discussion in '3rd Gen. Tacomas (2016+)' started by MidnightDrummer, Aug 21, 2019.

  1. Aug 21, 2019 at 12:40 PM
    #1
    MidnightDrummer

    MidnightDrummer [OP] Active Member

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    Hello, I don't post a lot but wanted to share some undercarriage surface rust that I'm starting to get on my 2017 Taco. I'm from New England and have about 34,000 miles on the truck so it has seen a few winters and more road salt than it probably should. I bring it to a car wash often in the winter for a wash with undercarriage spraying (no idea how well that works). Anyway, I was wondering if any of you paint over your surface rust, or lightly sand it down and cover it with any product. I've heard of spraying used motor oil on the underside of the truck, but I've not tried it. Any suggestions would be appreciated. Thanks in advance.


    IMG_1688.jpg IMG_1687.jpg IMG_1686.jpg IMG_1689.jpg
     
  2. Aug 21, 2019 at 12:46 PM
    #2
    MaTaco_4x4

    MaTaco_4x4 Well-Known Member

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    Paint it with chainsaw bar oil. Repeat once/mo for 3 months.

    It lasts for a couple years a bit South of you. Check it once in a while, cuz rust spreads quickly.

    Edit: scrape the flakes away. They trap water. Trapped water, like you get with any non-factory spray on "sealant", will rust your truck away in no time.

    This stopped my '05 Tundra from crumbling away. I was amazed by how well it worked.
     
    Last edited: Aug 21, 2019
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  3. Aug 21, 2019 at 12:58 PM
    #3
    MidnightDrummer

    MidnightDrummer [OP] Active Member

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    Thanks very much for the advice. I can hear the Toyota dealer laughing when I ask them if the rust I am seeing activates the corrosion performance clause in my warranty. I'm within 60 months but I doubt this will qualify.
     
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  4. Aug 21, 2019 at 1:00 PM
    #4
    EatSleepTacos

    EatSleepTacos Well-Known Member

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    That's nothing to worry about. Just start using a product called fluid film before every winter.
     
  5. Aug 21, 2019 at 1:12 PM
    #5
    MaTaco_4x4

    MaTaco_4x4 Well-Known Member

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    Does Fluid Film work as well as bar oil? Cuz bar oil is around $8 / gallon and lasts a couple years.

    I learned about it from a neighbor who restores old ww2 vehicles. Jeeps and trucks mostly. He'll paint replacement pieces, but won't paint anything he can't thoroughly bead blast and wipe with acetone first. He's got a Huey too, the hoardy bastard.
     
  6. Aug 21, 2019 at 1:32 PM
    #6
    EatSleepTacos

    EatSleepTacos Well-Known Member

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    Probably works better because fluid film is designed as an undercarriage protection. Sure you could probably let it go longer but once a year isn’t unreasonable at all.
     
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  7. Aug 21, 2019 at 1:36 PM
    #7
    MaTaco_4x4

    MaTaco_4x4 Well-Known Member

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    :thumbsup:

    I'll try it if rust appears.
     
  8. Aug 21, 2019 at 1:42 PM
    #8
    EatSleepTacos

    EatSleepTacos Well-Known Member

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  9. Aug 21, 2019 at 1:52 PM
    #9
    auskip07

    auskip07 Well-Known Member

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    I'm in the south so I don't deal with this but I would be inclined to hit the spots with some rust inhibitor spray
     
  10. Aug 21, 2019 at 2:53 PM
    #10
    TenaciousDave

    TenaciousDave Member

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    When I still had my 2011 I would take a wire brush to the rusty spots on the underside about every other year, then pime and paint. Seemed to work well and I could do it with stuff I already had in my garage.
     
  11. Aug 21, 2019 at 2:58 PM
    #11
    surfandturf

    surfandturf Well-Known Member

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    Fluid film meet here in Granby CT Sept 22.
     
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  12. Aug 21, 2019 at 3:02 PM
    #12
    amocat91

    amocat91 Member

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    Spray it with atf cheep easy and lasts a long time.
     
  13. Aug 21, 2019 at 3:07 PM
    #13
    Barrette86

    Barrette86 Well-Known Member

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    I have a 2015 and all the frame welds are starting to show rust. I bought it last year and it’s pissing me off a bit. But I live in Maine so f me right? Just used fluid film yesterday and it’s crazy the difference I can already see.
     
  14. Aug 21, 2019 at 3:13 PM
    #14
    RocTaco

    RocTaco Free stun!

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    Mine looked similar until a couple weeks ago. Hit all the spots with a wire brush, washed everything real good and let it dry.

    Then hit the spots with rust converter, and top coat of flat paint to blend everything in.

    Final step is your rust inhibitor of choice. I chose Mavcoat for everything I can reach easy/ may be working on down the road. Fluid film will be applied soon to boxed parts of frame/ spots where I couldn't get a good shot of the other stuff on.
    IMG_20190804_175755.jpg IMG_20190804_175728.jpg
     
  15. Aug 21, 2019 at 3:14 PM
    #15
    4X42HEL

    4X42HEL Well-Known Member

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    My 2019 looked similar when I drove it off the lot with 5 miles.

    Maybe it's just surface rust?
     
  16. Aug 21, 2019 at 3:14 PM
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    Barrette86

    Barrette86 Well-Known Member

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    Looks great man! Good job
     
  17. Aug 21, 2019 at 3:17 PM
    #17
    RocTaco

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    Thanks! It's not hard work, just a bit of time. The extra ~5" in height from makeshift ramps makes all the difference crawling around under there.
     
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  18. Aug 21, 2019 at 3:18 PM
    #18
    lynlan1819

    lynlan1819 Well-Known Member

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    That will be rusted through in 5 years.
     
  19. Aug 21, 2019 at 3:33 PM
    #19
    Blue92

    Blue92 Well-Known Member

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    A 1/4" thick hitch receiver? Me thinks not. Only thing that op pictured that I would fix immediately is the bottom pic. The shackle too, but thats easily replaceable if need be.


    +1 for fluid film. In my opinion, it trumps all other products that you can apply to your undercarriage for one reason. It seeps. Spray a little on your frame, 2 weeks later the wet spot will be much bigger. It will soon be time to spray my 04 next month. Sucks to do, but worth it to know my truck is protected.
     
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  20. Aug 21, 2019 at 3:52 PM
    #20
    Nice96

    Nice96 Well-Known Member

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    Never done anything to my 99 had it 17 yrs never left Maryland my 96 same for 23 yrs old girl looks good under her skirt lol never been out of md I hear theses theses horror stories I guess I am lucky ? My buddy has a 96 got it in Delaware has had it for 20 + yrs bed is rusted through frame is holey just terrible so go figure even Wells and body rusting out wants me to take it and restore it but I don't know it's gonna be a job lol
     
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