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What is the black oil product that people spray on frames? #2927414
05/27/21 08:23 PM
05/27/21 08:23 PM
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hp383 Offline OP
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Looking for information on the black oil product people use on vehicle frams to protect them from rust.

Not that Ziebart thick undercoat.

I have a clean, but surface rusty frame on a weekend driver that I'd like to make a bit more presentable. But I don't have the means to completely clean and strip the frame to paint with POR 15 or Rustoleum type products at this time.

I just want to do what I can afford to keep the truck in good shape until an opportunity to do something better is available.

20210527_145456.jpgSmartSelect_20200331-174407_Gallery.jpg

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Re: What is the black oil product that people spray on frames? [Re: hp383] #2927422
05/27/21 08:38 PM
05/27/21 08:38 PM
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Ontario, Canada
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Stanton Offline
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Its oil ... then you drive it down a dirt road. PRESTO - black oily crap !!

Re: What is the black oil product that people spray on frames? [Re: Stanton] #2927427
05/27/21 08:57 PM
05/27/21 08:57 PM
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hp383 Offline OP
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The product I am referring to is actually tinted black. It comes in its natural oil version and a tinted variety so it doesn't just look like wet brown rust.


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Re: What is the black oil product that people spray on frames? [Re: hp383] #2927430
05/27/21 08:59 PM
05/27/21 08:59 PM
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I am not familiar with an oil product but I have had good luck with Extend rust convertor or similar.

I often use Rustoleum but to get it black you would want to use the primer and then the paint.

Re: What is the black oil product that people spray on frames? [Re: IMGTX] #2927434
05/27/21 09:10 PM
05/27/21 09:10 PM
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Los Osos, Ca
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CKessel Offline
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Eastwood, Wurth, 3M and others make that. Eastwood has both the oil/wax type which never hardens, creeps in/travels etc or the polymer type which hardens like paint. The oil/wax type works great but you need to be mindful of dust/dirt/sand/mud as the oil will attract it.

Last edited by CKessel; 05/27/21 09:11 PM.

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Re: What is the black oil product that people spray on frames? [Re: CKessel] #2927436
05/27/21 09:14 PM
05/27/21 09:14 PM
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I would be very hesitant to coat any steel, with the level of rust I see in the pic, with a coating that would harden and trap future moisture.

If removing the rust was not an option, definitely an oil/wax type coating would be the direction I would go.


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Re: What is the black oil product that people spray on frames? [Re: jcc] #2927441
05/27/21 09:27 PM
05/27/21 09:27 PM
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Grand Prairie,Texas
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Ospho rust converter

Re: What is the black oil product that people spray on frames? [Re: hp383] #2927443
05/27/21 09:29 PM
05/27/21 09:29 PM
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Re: What is the black oil product that people spray on frames? [Re: NITROUSN] #2927452
05/27/21 09:56 PM
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Oakwood Ont Canada
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Fluid Film, there is a clear and a black.

Re: What is the black oil product that people spray on frames? [Re: 340mouse] #2927463
05/27/21 10:15 PM
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Were I live in the rust belt there is Krown Rust Protection and other companies. New vehicles that are Trucks or SUVs when delivered to the Dealer already show rust on the frame and Cast iron such as the Rear end. I get them to rust coat the complete truck I have bought over the years and it seems to keep everything mostly rust free. Spray the inside of the body also. You can also buy cans ot this from Krown or others.

Last edited by hemicar1971; 05/27/21 10:16 PM.

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Re: What is the black oil product that people spray on frames? [Re: hemicar1971] #2927488
05/28/21 12:17 AM
05/28/21 12:17 AM
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Krown, Rust Check or any other oil type rust proofing/undercoating is the way to go. Anything that hardens is going to make it worse.

Re: What is the black oil product that people spray on frames? [Re: 340mouse] #2927502
05/28/21 02:17 AM
05/28/21 02:17 AM
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hp383 Offline OP
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Originally Posted by 340mouse
Fluid Film, there is a clear and a black.


This is the stuff I was thinking of. Thank you.

Now I can look it up to be sure its the oil based film I was wanting.


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Re: What is the black oil product that people spray on frames? [Re: hp383] #2927503
05/28/21 02:19 AM
05/28/21 02:19 AM
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hp383 Offline OP
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I definitely wasn't looking for anything that hardened. Just an oil and I guess also maybe a wax product.

Thank you guys for the help.


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Re: What is the black oil product that people spray on frames? [Re: hp383] #2927525
05/28/21 08:08 AM
05/28/21 08:08 AM
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USA
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I bought a gallon of “Safest Rust Remover” concentrate that makes five gallons of “fountain spray” but have not gotten around to buying the kiddie pool to place under the truck. I have a 120 volt AC fountain pump.

I saw the video here on Moparts of de-rusting the underside frame and axle assembly of the Ram by gently spraying the solution onto a rusty area and catching the solution in the kiddie pool and constantly recirculating with the fountain pump. Move the spray head progressively on to new rusty areas.

Safest Rust Remover allegedly can do this but EvapOrust liquid cannot.

Re: What is the black oil product that people spray on frames? [Re: 360view] #2927539
05/28/21 08:59 AM
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westerly, ri. usa
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440lebaron Offline
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por-15 is a brush on black, was very popular a few years ago

Re: What is the black oil product that people spray on frames? [Re: hp383] #2927542
05/28/21 09:06 AM
05/28/21 09:06 AM
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Confusion
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New Hampshire Oil is another one. They offer it in both clear and black. It is mineral oil based

Re: What is the black oil product that people spray on frames? [Re: Dodger440] #2927551
05/28/21 09:21 AM
05/28/21 09:21 AM
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Re: What is the black oil product that people spray on frames? [Re: DaveRS23] #2927560
05/28/21 09:42 AM
05/28/21 09:42 AM
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The underside of that truck is MINT! We don't even call that rust here in Iowa.

Re: What is the black oil product that people spray on frames? [Re: 5thAve] #2927583
05/28/21 11:02 AM
05/28/21 11:02 AM
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Originally Posted by 5thAve
Krown, Rust Check or any other oil type rust proofing/undercoating is the way to go. Anything that hardens is going to make it worse.


Sorry, I have to disagree with you about Krown. I took two vehicles to a Krown in Sarnia, ON. a few years ago & had them do both. Seemed great going on & the stuff dripped for days - I thought great - penetrating stuff getting everywhere. Then 2 years later, the hood on one of the vehicles started rusting along the front seam & I had even sprayed extra along areas like this myself several times after (they gave me a few cans of the stuff). Next time the car was in the air, I checked out the undercarriage - there was no trace of Krown anywhere - it did not set up at all - it all rinsed off. Nothing to be found in nooks or crannies anywhere. Krown is not petroleum based, it's more like vegetable oil. It's useless. For rustproofing, if it's not petroleum based & toxic, it's useless.

Best stuff I've ever found was the old Texaco rustproofing - it's not available anymore. The stuff was like a thick brown grease, & if you coated something, it would NEVER come off. They would heat it to thin it out & spray it on. I have a 5-gallon can of it still & use it occasionally. This summer I plan on experimenting with reducing it down with mineral spirits & I need to rustproof my Ram with it. Need to spray it inside of the doors, rockers, & other areas. I've already used it on the rear wheelwells of the truck shortly after I bought it - up in the doublewall areas above the rear wheels where they all rust.


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Re: What is the black oil product that people spray on frames? [Re: hp383] #2927663
05/28/21 01:34 PM
05/28/21 01:34 PM
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I am not a fan of any of the sealings or undercoatings for the bottom of our cars. I have sure seen plenty of factory undercoat cars that were very rusty UNDER the undercoating. If and when any water gets under the coating and starts to rust, the trapped water will really go-to-town. It is impossible to totally seal the bottom of a car from water and salt and such. Besides the fact that water, salt and other contaminants can come from above and then get trapped under the sealer.

That stuff may be okay as a sound deadener or something like that, but I don't think it is much help with rust proofing. I have just seen too many examples of rusty undercoated cars. twocents


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