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Old 07-14-2019, 06:23 PM
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Rust on a new JKU

I know the subject of rust appears here occasionally and I've heard about fluid film and other preventative products. I'd like to get some thoughts on this situation.

I bought this JKU 6 days ago, it's brand new and has been sitting on the dealer's lot for over a year. I don't know what the build date is but it was bought on Monday 8th July. I noticed yesterday a little rust and climbed under there today to get a better look. Some of it seems a little more than surface rust. In any event, new Jeep shouldn't have it.

I'm in two minds about it. I reached out to the salesman and he wants me to take it to a local dealer to get photos and maybe do a claim through FCA. I like that idea if they'll do it. I also thought about getting a wire brush onto it and treating it myself. What are your thoughts?

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Old 07-14-2019, 06:25 PM
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Some more photos.

What other recommendations does anyone have with respect to rust prevention?
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2018 JKUR white, M/T. Picked up 5.25.18. Sold Feb 19 big mistake.
2016 JKUWW Blue manual. Picked up 5.24.16. Sold 10.2.17
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Old 07-14-2019, 07:05 PM   #3
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Krown Rust proofing - amazing product.
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Old 07-14-2019, 07:05 PM   #4
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I've used this product for years waxoyl, rovers north is about the only place in the states that sells it, once you start you are commuting it at lest once a year, it works
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Old 07-14-2019, 07:21 PM   #5
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Looking at those pics makes me wonder if it wasn't under water for a time. Any major flooding in the area it was delivered to?
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Old 07-14-2019, 07:30 PM   #6
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IMO for a "new" vehicle that is ridiculous.
Kind of redefines the term "Lot Rot".

This may try your capacity for squeaky wheel was to move FCA to action.
The JL's have been blessed with new processes. My JKs rusted horribly.
I would probably not wait on FCA because I'm impatient by nature, I'm a fixer and I do not trust car makers in general.

Couple ways to go treatment wise. With rust I'm always more concerned with what I don't see.
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Old 07-14-2019, 07:35 PM   #7
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Mine was just slightly better, build in December 17 delivered to dealer January 18 so it probably saw all salty roads between Ohio and California.
I just wire brushed rust off and painted with a $3 rattle can from walmart.
I didn't paint the whole frame just affected areas and never tackle many 'areas" at once.
FCA is painting over rust I often find rust under 'healthy" looking paint, therefore i dont use any oily protective substances, just sand paper and paint.
Some steel wire power tool might be helpful to speed up the process however 80 grid and steel brush works well on surface rust.

My next jeep.... would look for one built in summer )
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Old 07-14-2019, 07:40 PM   #8
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If it’s under warranty then I’d report it. Start there and if you have bigger issues later you’d have this to point to as the first reported problem and it would be documented with FCA. Don’t report it and you’ll have a much harder time imho.
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Old 07-14-2019, 07:54 PM   #9
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Krown undercoating.. I have all my vehicles done every fall.


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Old 07-14-2019, 07:57 PM   #10
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If it’s under warranty then I’d report it. Start there and if you have bigger issues later you’d have this to point to as the first reported problem and it would be documented with FCA. Don’t report it and you’ll have a much harder time imho.
On the body panels- yes
Surface rust on frame and suspension components I doubt is even covered by their warranty.
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Old 07-14-2019, 08:02 PM   #11
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Krown undercoating.. I have all my vehicles done every fall.


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I get the salt eliminator wadh in May, krown spray each July.
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Old 07-14-2019, 09:11 PM
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Originally Posted by RubiconSS View Post
IMO for a "new" vehicle that is ridiculous.
Kind of redefines the term "Lot Rot".

This may try your capacity for squeaky wheel was to move FCA to action.
The JL's have been blessed with new processes. My JKs rusted horribly.
I would probably not wait on FCA because I'm impatient by nature, I'm a fixer and I do not trust car makers in general.

Couple ways to go treatment wise. With rust I'm always more concerned with what I don't see.
I'm the same way and was going to take a wire brush to it with some rust converter. What you said about what you can't see holds very true here, especially in that cross piece, I just can't see inside there. I guess first thing Tuesday morning is go see the local dealer.
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2018 JKU Golden Eagle. M/T. Picked up 7.8.19
2018 JKUR white, M/T. Picked up 5.25.18. Sold Feb 19 big mistake.
2016 JKUWW Blue manual. Picked up 5.24.16. Sold 10.2.17
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Old 07-14-2019, 09:13 PM
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Originally Posted by Lemotan View Post
Mine was just slightly better, build in December 17 delivered to dealer January 18 so it probably saw all salty roads between Ohio and California.
I just wire brushed rust off and painted with a $3 rattle can from walmart.
I didn't paint the whole frame just affected areas and never tackle many 'areas" at once.
FCA is painting over rust I often find rust under 'healthy" looking paint, therefore i dont use any oily protective substances, just sand paper and paint.
Some steel wire power tool might be helpful to speed up the process however 80 grid and steel brush works well on surface rust.

My next jeep.... would look for one built in summer )
I was thinking about a similar route, wire brush then drown it in some form of goop. Mine was build January 2018.
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2018 JKU Golden Eagle. M/T. Picked up 7.8.19
2018 JKUR white, M/T. Picked up 5.25.18. Sold Feb 19 big mistake.
2016 JKUWW Blue manual. Picked up 5.24.16. Sold 10.2.17
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Old 07-14-2019, 09:20 PM
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Some more info, FWIW. It was built Jan 2018 and I guess shipped direct to the lot on Houston. This is post Harvey flooding, and I don't believe there was any flooding last year in Houston, nor this year for that matter. It only had 30 miles on the odometer. I can only think this is corrosion from salt air (coastal breeze) and high humidity. Oh yes, and a lack of reasonable protection from corrosion at the plant.
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2018 JKU Golden Eagle. M/T. Picked up 7.8.19
2018 JKUR white, M/T. Picked up 5.25.18. Sold Feb 19 big mistake.
2016 JKUWW Blue manual. Picked up 5.24.16. Sold 10.2.17
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Old 07-14-2019, 10:03 PM   #15
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Is there a story behind why you dumped an 18 Rubicon for an 18 Golden Eagle
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Old 07-14-2019, 10:16 PM   #16
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that is excessive. They rust pretty fast but I have 25000 miles on my 2018 recon and there is no rust like that. I have owned 4 jk's and even my 2014 that had 60,000 miles and well used did not have rust on the frame like that and the tranny mounts. I think that was submerged in salt water maybe a test drive gone wrong.
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Old 07-14-2019, 10:27 PM   #17
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Agree with others that it looks like an awful lot of rust for just sitting on the lot. The crossmember is easily and pretty cheaply replaced, but if the inside of your frame is rusting that's a different matter.

Also surprised to hear above about a CA Jeep rusting just from delivery, guess I'm glad mine was built and shipped out in August instead of December, no rust other than uncoated stuff like driveshafts.
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Old 07-14-2019, 10:32 PM   #18
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Something is definently wrong. I got a 2016 Rubi and have had it for 3 years and the bottom of mine is not that bad. May be because I bought mine in California? I have slight rust on the rear drive shaft and that's about itAnd that is with some moderate-light water crossings
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Old 07-14-2019, 11:59 PM   #19
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Nothing wrong just some salt spray from the road and then parked for a almost a year in warm climate. Mine looks like new now - its easily fixable.
And is from outside only when you look inside the frame is like new.
I removed skid plates, cross member, sway bar brackets and painted separately just for convenience.
But as I said no more jeeps built in winter, lesson learned.
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Old 07-15-2019, 12:28 AM
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Is there a story behind why you dumped an 18 Rubicon for an 18 Golden Eagle
A lot going on in my personal life. I thought I needed a pickup truck to move interstate, so traded the JKUR for a truck (I sure got a lot of use out of it). I made several 2000 mile trips with @ 6000lb trailer loads. The Rubi would have been destroyed and I didn't think I'd be going back to Jeeps. As soon as I finished the move I suddenly couldn't stand driving the pickup and 'needed' a Jeep again. Didn't want a JLU.
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2016 JKUWW Blue manual. Picked up 5.24.16. Sold 10.2.17
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Old 07-15-2019, 06:43 AM   #21
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Doesn't look that bad for a year and a half old vehicle.
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Old 07-15-2019, 07:10 AM   #22
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Krown Rust proofing - amazing product.
He is from St. Louis MO, and so there is no Krown products there.
I say POR-15.
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Old 07-15-2019, 07:14 AM   #23
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Doesn't look that bad for a year and a half old vehicle.
+1

You’ll be wasting your time taking it in for service. This is normal.
If you think that is a lot wait until you drive through a Midwest winter. This past year was terrible with temps staying at or below freezing for weeks at a time. It added more rust to my Jeep then was present after 3 previous winters.
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Old 07-15-2019, 08:33 AM   #24
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Not normal. My '17 came off the lot with only a rusty drive shaft. Everything was black and no white spotting like that frame pic. I would definitely complain and see what you get out of it. I would use rustoleum black rust converter and spray all rust spots after the dealer visit assuming they do not do anything to fix this. In the winter time, I would apply fluid film if in the rust belt.
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Old 07-15-2019, 09:01 AM   #25
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Looking at those pics makes me wonder if it wasn't under water for a time. Any major flooding in the area it was delivered to?
That is exactly what it looks like to me as well. On the first photo I thought maybe a little rust forming on the welds, but seeing the residue on the other parts in later photos and seeing rust where the factory coat has been scratched I think one of two things.

First this Jeep was exposed to flood waters at some point.
Second This Jeep was sold out of a rust belt state and was taken for test drives during the salt months and was never properly washed afterwards.
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Old 07-15-2019, 11:38 AM   #26
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Not normal. My '17 came off the lot with only a rusty drive shaft. Everything was black and no white spotting like that frame pic. I would definitely complain and see what you get out of it. I would use rustoleum black rust converter and spray all rust spots after the dealer visit assuming they do not do anything to fix this. In the winter time, I would apply fluid film if in the rust belt.
How long was your Jeep on the lot and do you live in the same region as the OP?
OP...I’d say between condensation and minerals used on the lot this past year to clear snow it’s normal. Go check some other leftover Jeeps to validate.

EDIT.. looks like you’re in New York so no.
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Old 07-15-2019, 11:53 AM   #27
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My October 2016 build that we picked up new on July 1st 2017 still doesn't have rust like that on it and it's been through 3 St. Louis winters.
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Old 07-15-2019, 12:15 PM   #28
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My theory is that this Jeep was initially for sale at a dealer somewhere in the rust belt.

There it took some test drives on salty roads. It got subsequently moved/traded to a southern lot (Houston). Then with the salt on the frame and the humidity of the southern climate it started to rust.

This type of rusting may never happen to an active owner, because some of the salt would be washed off by subsequent rides in the rain.

However after salt exposure, this vehicle may have never been taken for a ride in the rain and may have just sat there in the humid climate with the salt over the frame.
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Old 07-15-2019, 12:29 PM   #29
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Some more info, FWIW. It was built Jan 2018 and I guess shipped direct to the lot on Houston. This is post Harvey flooding, and I don't believe there was any flooding last year in Houston, nor this year for that matter. It only had 30 miles on the odometer. I can only think this is corrosion from salt air (coastal breeze) and high humidity. Oh yes, and a lack of reasonable protection from corrosion at the plant.
I just bought a 2018 JK Oscar Mike here in Houston and it has no where near that amount of rust/corrosion. According to the Carfax it has been here since it was delivered from the factory. And there was flooding here as recently as May of this year. Outlying areas like Sugarland, Cleveland, Kingwood and others had high water.
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Old 07-15-2019, 12:33 PM   #30
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My October 2016 build that we picked up new on July 1st 2017 still doesn't have rust like that on it and it's been through 3 St. Louis winters.
My April 15 build didn’t have rust like the OP until this past winter and I park in a garage everyday. Too many variables for people to conclusively say there is an issue.

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