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Old 01-04-2013, 10:21 AM   #1
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Keeping underneath rust free

I have a 2000 wrangler that is in pristine condition underneath. Very clean no rust. It snowed last week here in WV and I was driving on salted roads. What is the best way to clean the underneath to keep it rust free? Is it worth undercoating after cleaning?

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Old 01-04-2013, 10:47 AM   #2
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Wash it at least once a week and keep the frame touched up with good spray paint. Don't waste time with undercoating.

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Old 01-04-2013, 03:16 PM   #3
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What imped said, plus think about using something like Fluid Film. I spray my underside down in the winter with it. Think of it as heavy WD40 that doesn't evaporate. It still comes off with a pressure washer or a good cleaning, but it keeps the salt off the frame all winter.

They also make nice flexible tube to do inside the frame rails in all the known places.

Good luck
Kevin
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Old 01-04-2013, 06:59 PM   #4
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Quote:
Originally Posted by obiefox
What imped said, plus think about using something like Fluid Film. I spray my underside down in the winter with it. Think of it as heavy WD40 that doesn't evaporate. It still comes off with a pressure washer or a good cleaning, but it keeps the salt off the frame all winter.

They also make nice flexible tube to do inside the frame rails in all the known places.

Good luck
Kevin
Thank you both. Kevin, should I paint the exposed metal before I spay down with Fluid Film or should I just spray fluid film over the slightly rusted areas?
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Old 01-04-2013, 08:54 PM   #5
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You said in the OP that it is "in pristine condition underneath". Pristine to me means perfect black factory frame.

If you want it black, clean it up and paint it. The fluid film doesn't care, as it will stop the corrosion and protect either way.
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Old 01-04-2013, 10:22 PM   #6
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Lol. It was until this winter
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Old 01-04-2013, 10:56 PM   #7
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If you keep it painted perfectly and wash the salt off occasionally you will be good without any special spray. A power washer will be a great investment and your new bestfriend.
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Old 01-05-2013, 12:10 PM   #8
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+1 on fluid film if you want to keep it in as good as shape as possible, _and_ it will keep bolts and hardware free and much easier to work on when you want to.
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Old 01-05-2013, 03:49 PM   #9
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Yeah, fluid film is pretty cool stuff in my opinion. I never knew anything about it until I saw local farmers shooting their equipment with it. I saw an old farmer using an air sprayer to shoot his entire combine with it. He was getting ready to put the combine away for a while after harvest.

I did a little research and then I understood why he was using it. I don't bother with an air sprayer or anything, but you can mail order a case of spray bombs for about $10-$15 a can. The spray cans are convenient and I use it on all kinds of stuff now around the farm.
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Old 01-05-2013, 06:16 PM   #10
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Cool. I will definitely pick up some. Ill probably buy in bulk and use an old garden sprayer to apply. I painted the underneath today and was very surprised how rust free everything was. The frame and transfer case skid had no rust. Surprising for a WV jeep to have no rust . Plan on keeping it that way!
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Old 01-05-2013, 07:02 PM   #11
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I have never used this product but it might be worth looking into?

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Old 01-06-2013, 05:33 AM   #12
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Fluid Film works great and stays on all winter, but it suxs when you need to work underneath. It gets all over you, your hands, hair, tools..... everything. Now I just clean and rattle can it.
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Old 01-06-2013, 06:47 AM   #13
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Fluid Film is great stuff for keeping snow/mud from sticking, but stinks worse than a wild hog's lady parts during a Texas Summer.
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Old 01-06-2013, 08:28 AM   #14
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Yeah, you can get a little on you working under the Jeep, but it is not that bad. I grab a couple paper towels and wipe off the immediate area I am working on. When I'm done, I just respray the area and move on.

"wild hog's lady parts" sadly that is the best description I have ever heard of the smell of FF. It does have an interesting smell for the first week or two.
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Old 01-06-2013, 08:33 AM   #15
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My 05 is in wisconsin and road salt is horrible here, my jeep was undercoated when new, and I touch it up with gunks rubberized undercoat 2 times a year and its been working great for me.
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Old 01-06-2013, 08:38 AM   #16
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If you take care of it... clean it... touch it up... and keep it that way.... you will have a corrosion-free undercarriage for many years.

I actually pressure wash mine regularly. At the end of the winter... I usually take 6-8 hours to get under there in a rain suit and faceshield and detail everything I can. Washing out the framerails is the tricky part... I have the front about 3 feet up in the air when I do it. I do this after every mud run as well.
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Old 01-06-2013, 09:47 AM   #17
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Quote:
Originally Posted by TnDz TJ View Post
I usually take 6-8 hours to get under there in a rain suit and faceshield and detail everything I can.
Ok, I think you win for most involved in undercarriage cleaning for a non-show vehicle.
I wish I could be that motivated to even care about being that detailed. I want to buy used vehicles from you in the future.
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Old 01-06-2013, 10:57 AM   #18
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Some guys around here used to take wheel bearing grease and thin it down with diesel fuel and spray it on with a hand held sandblaster, instead of sucking up sand the sucked up the undercoating. Pretty much a poor mans fluid film.
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Old 01-06-2013, 02:31 PM   #19
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Old 01-06-2013, 02:40 PM   #20
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Rofl
I was waiting for that tube to come out and rust proof him
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Old 04-27-2013, 03:04 PM   #21
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Anyone have any experience with this stuff:


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