Used Ospho on a 500 gal fuel tank that was totally covered in rust. The Ospho turned the rust black and left a powdery white residue. It completely stops rust and serves as a good primer. Simply brushed off the powder then painted the fuel tank and even though it sat beside saltwater, no rust formed after 5 years. Great stuff.
Wow, I'm sold after reading your comment. I have bad rust on my rear trunk on my car. I was going to do the whole bondo thing, but it's 13 years old and maybe that's too much work for a car that old at this point.
I have some rust bubble forming on the rear wheel arch flange, i was wondering if i strip the paint off the bubble and apply the ospho, you guys think its a good idea? Rust bubble at the begining stage
I used this product on a tree chipping machine, which is stored outdoors uncovered. It withstood the NE elements for about 2.5 years before rust started to resurface. I like that it runs into body seams that are not accessible. I'm retreating with the same product this week.
I read through some of the other comments now on this video and I think the Ospho process is misunderstood. Take a painted/coated panel that has rust on it... Step one is to grind the entire surface down to bare metal, using a wire wheel to grind the rusted areas of all scale and brown surface rust. The rust needs to be wire wheels until virtually no more brown dust comes up from doing so. Then at that point, it's time to apply the Ospho. I always apply it with a brush, working it really well into the metal and I do the entire panel, even if there's no rust in spots. Then it needs to fully dry, minimum of 24 hours. Step 2 is to make sure it's completely dry and then I start with P80 grit sand paper on a DA and make sure to remove all surface scale created by the Ospho. You do not leave that scale in place! That scale is the converted rust contaminants that cannot stay with the panel. Once it's all sanded down and no more scale, it's ready to be wiped clean with a good wax and grease remover. Step 3 is to coat the panel with a good primer and paint as normal from there. Hope this helps someone out there in TH-cam - land 👍
Not what the bottle says it says no need to remove all rust only the large chunks and as for the white stuff it should come off with a rag and water if you wire it your defeating the purpose of dissolving it with the acid which converts it to a coating that can’t rust anymore, it’s just a chemical reaction that turns iron oxide “rust” into iron phosphate, you need the light rust there to do its job
I learned about this stuff about 40 years ago. It's what they use on drilling platforms in the gulf to handle rust. Works very well, time tested product.
When I was much younger I worked on shrimp boats and when we were doing nothing else we spent our spare time applying Ospho to any and all rusted areas.
PLEASE if you are going to use OSPHO, use gloves, eye protection and a respirator if available, or at least a mask. OSPHO is a high concentration of phosphoric acid and it converts iron oxide (rust) to a zinc phosphate coating.. requires scuffing and then priming and painting after.. a very effective product!
Lol........... Unless your a Professional Auto Body trades man and a Heavy Smoker Drinker and don't wear a mask Sanding and Painting anyways......... :)
I used Ospho on my truck about a year ago and covered it with primer and paint. So far I do not see any signs of the rust coming back. One thing you should do though is to make sure you put a plastic tarp or polyethylene film underneath what you are applying the Ospho too because it will eat concrete. I can attest to this fact because I ordered a gallon from Amazon and when UPS delivered it the box was wet and the driver sat the box down on my concrete porch and it immediately started to eat the concrete. Luckily I had read a post from another youtube video where someone had the same problem so I just refused the shipment and immediately washed the concrete off with water. I was able to go buy a gallon from my local TruValue hardware store.
Will Oil based paint. Not epoxy. If not using oil based, reapply Ospho, let sit for a few minutes and wash away with water like you was washing a car. I hate that they don't say this. If you paint over Ospho with any paint, primer that's not oil based it will bubble and not stick. Ask me how I know!!
Its real easy to find man. Here's a link to Google that brings it up a lot. www.google.com/search?q=ospho+skyco+rust+stopper&rlz=1C1CHZN_enUS919US919&oq=Ospho+Skyco+Rust+Stopper&aqs=chrome.0.0j69i61l2.528j0j1&sourceid=chrome&ie=UTF-8
Does Klean Strip Concrete & Metal Prep leave behind some latex or acrylic coating? Is there a rust converter that only uses acid? Seems like some latex coating will negate the ability to use a primer. Ultimately, you're limited to the adhesion of that latex or acrylic.
This video is 5 years old so I'm not sure if you will respond. It's regarding use of the Ospho. I was using the Ospho exactly like you were in this video. I was spraying Ospho into cavities I could not reach. I would then coat with epoxy primer and paint. NOW I am seeing that the paint can lift off from improper use of the product. Now that 5 years has past, what is your experience with Ospho, epoxy primer and any paint lift issues.
I have experienced no issues with my epoxy primer lifting off anywhere on the car, but I also haven't been keeping my car outdoors, and I have yet to paint it as well.
I would also like to know this. From what I have seen you just primer or paint right over the metal after the ospho dries. If it is still a little wet or damp after 24 hours then wipe it clean then paint or primer. You can probably also sand or scuff the metal after the ospho dries and its probably a good idea to use a degreaser in between those steps. Anyone else have any other suggestions?
I'd love to try this stuff in Australia as we just get ripped off for inferior products but that bottle you have there has to be sent from.the US as nobody in Australia sells it.and it will cost well over $350 AUD.....so yeah, pretty jealous of how you yanks get good restoration products cheap.
@@glenpaul3606 I buy mine from Ace. Idk how many repair videos I've saw where they don't treat the rust under the panel they replace. Even big shows like power Nation, etc. Man you gotta kill that shit or it'll rot off in a year. Glad you do shit right man.
In this video, I later sandblasted it all away. I'm using this stuff to treat rust in places I can't sandblast or paint. The label on the jug actually says you can treat the rust and then paint right over it. I don't think that's the proper way to restore anything, but we've got to be realistic and acknowledge there's just some spots we cannot access.
@@silvanoramirez4921 yes if the paint is not good. I should've clarified. I used in not nice painting months on rust bubbles that I was going to fix in spring summer. I've used it in a syringe and just pierced bubbles and put some on it. I've also used PB blaster but it needs reapplying after a month or so.
@@kitjasabsgabs1830 im having same issue, some rust bubble forming and i'm trying to find best way to prevent further spread or development. How is yours holding so far?
@@pc8472 Black and sealed. No rust. Mine had a few bubbles I saw a week ago right under bottom of carriage top. And I do not want to take that off and have to reseal it and put back. Idk who did it but they did a perfect job sealing it. Ant see it unless u look hard, and it's still 100%. Do what I said above. Poke the bubble and get some Ospho is there. Then you can fix it next spring. Mine started cause of the stainless wheel arch pieces that they SCREWD in the fender lip and DIDNT put any epoxy primer, etc so it wouldn't rust. And the gasket is not silicone. It was vinyl. So dirt etc got back there and made a few spots. My father got a new hobart welder to weld up his 31 model A and I'm going to weld in New pieces. Small holes. Smaller than a quarter. But with the price of resin, hardener, fiberglass etc welding is way faster, cheaper. I also use CarRep 2 part epoxy primer and clear. It has no chamber to pop with cap on bottom. It has NO shelf life. It lasts forever. That 2k primer is good but u got 24 hrs kept in fridge at max and it's done. Costs same, buy on Amazon. Ospho Ace hardware. Great stuff. Then mix 1 quart of any new or used oil, 1 quart of any new used trans fluid, not post surgery but real trans fluid lmfao, 1 tube or tub of grease like grease gun or wheel bearing, 1 wax toilet flange gasket. Mix all in pot, heat and mix. Then spray, brush etc. Will not ever rust, costs less than $6 if using drained oil and fluid. And lasts alot longer than 3m Cavity wax, Blaster, Fluid Film etc. Tape drain holes in doors and fill with mineral, baby oil. Or meted Vaseline. Let soak for few days then drain and save for next time. Used this for 20 years on all things that I didn't want rusty. Knock off heavy rust, clean with degreaser. Ospho to convert surface or deeper rust and then I use Eastwood internal frame, then farm implement paint with 3 capsules of hardener. That paint will kill 36 grit flapper. Or JD black paint for machinery. Dozers etc. Then this recipe. Any more info needed, let me know. I help anybody save their rides. These newer vehicles suck. I'll never have one. I'll keep buying all the Town cars I can find.
Thanks to Steve for pointing out the importance of not inhaling this stuff. I think he's right, a good respirator is a solid idea if you're going to spray this stuff.
Sprayed alot of it. Not bad unless it's blowing at you. Very safe product. It's for the dumb. Like the warning on preparation H, Do not eat or use internally. Most know better, for others, read the label!!
@@CinHalCedHerChance unfortunately yes. I wandered as a 80s kid pooping reading the labels of different bathroom toiletries why do they have to say do not eat, ingest or use on the inside of body? Like as a 10 year old kid I was like Nah I won't put Monistat 7 in my mouth. I did have a great squirter gun when the family got together and I came running out squirting the family with my moms duche bottle. I didn't realize until later why they was so mad, especially Mom. I did after I learned what it's used for. Ahh to be a kid before the internet ruined it for kids and they getting fatter like their parents, but tell my wife who's 5ft3 and weighs 105 Gosh your so skinny. Like she don't walk by you at same height weighing 320 saying gosh you so fat. It's a different world today. Very confusing and different.
@@kitjasabsgabs1830 lol @ Mom's "bottle" .. agreed about life before the internet. I thought it was incredible when I first got the internet in '96, but after 2014/2015 and social media, I realized it was the worst thing for us and it's only making people more stupid and that's terrifying.
Make sure you do a proper rinse off before you try to paint it if the step isn’t done, your paint will bubble within the first year hard learning lesson
Used Ospho on a 500 gal fuel tank that was totally covered in rust. The Ospho turned the rust black and left a powdery white residue. It completely stops rust and serves as a good primer. Simply brushed off the powder then painted the fuel tank and even though it sat beside saltwater, no rust formed after 5 years. Great stuff.
Wow, I'm sold after reading your comment.
I have bad rust on my rear trunk on my car. I was going to do the whole bondo thing, but it's 13 years old and maybe that's too much work for a car that old at this point.
@@CinHalCedHerChance Won't do much good if it's completely rusted through...there has to be some metal left...
@@glenpaul3606 It's starting to thin out, if I leave it for a few more months it'll all flake off. Probably borderline at this point.
I have some rust bubble forming on the rear wheel arch flange, i was wondering if i strip the paint off the bubble and apply the ospho, you guys think its a good idea? Rust bubble at the begining stage
What paint did you use???
I used this product on a tree chipping machine, which is stored outdoors uncovered. It withstood the NE elements for about 2.5 years before rust started to resurface. I like that it runs into body seams that are not accessible. I'm retreating with the same product this week.
I read through some of the other comments now on this video and I think the Ospho process is misunderstood.
Take a painted/coated panel that has rust on it...
Step one is to grind the entire surface down to bare metal, using a wire wheel to grind the rusted areas of all scale and brown surface rust. The rust needs to be wire wheels until virtually no more brown dust comes up from doing so. Then at that point, it's time to apply the Ospho. I always apply it with a brush, working it really well into the metal and I do the entire panel, even if there's no rust in spots. Then it needs to fully dry, minimum of 24 hours.
Step 2 is to make sure it's completely dry and then I start with P80 grit sand paper on a DA and make sure to remove all surface scale created by the Ospho. You do not leave that scale in place! That scale is the converted rust contaminants that cannot stay with the panel. Once it's all sanded down and no more scale, it's ready to be wiped clean with a good wax and grease remover.
Step 3 is to coat the panel with a good primer and paint as normal from there.
Hope this helps someone out there in TH-cam - land 👍
Thanks - this is helpful, first timer over here
Not what the bottle says it says no need to remove all rust only the large chunks and as for the white stuff it should come off with a rag and water if you wire it your defeating the purpose of dissolving it with the acid which converts it to a coating that can’t rust anymore, it’s just a chemical reaction that turns iron oxide “rust” into iron phosphate, you need the light rust there to do its job
I learned about this stuff about 40 years ago. It's what they use on drilling platforms in the gulf to handle rust. Works very well, time tested product.
When I was much younger I worked on shrimp boats and when we were doing nothing else we spent our spare time applying Ospho to any and all rusted areas.
PLEASE if you are going to use OSPHO, use gloves, eye protection and a respirator if available, or at least a mask. OSPHO is a high concentration of phosphoric acid and it converts iron oxide (rust) to a zinc phosphate coating.. requires scuffing and then priming and painting after.. a very effective product!
Lol........... Unless your a Professional Auto Body trades man and a Heavy Smoker Drinker and don't wear a mask Sanding and Painting anyways......... :)
I sprayed it on my car do I still need to scrape off ? its hard to access or can I spray paint over it?
@@4WINify You can Paint over it unless its Gooey... then clean it off... Best to sand all the areas anyways after applying a Rust killer
@@4WINify 39 years Auto-Body
@@kelvenguard thanks for the tip as long as leaving doesn't harm the cars metal . I would think leaving it on protects the car
Can you use this on a rod iron fence that is now showing signs of rust
I used that product on a set of model T wire wheels and left them in a shed for 10 years. No rust ever came back.
I used Ospho on my truck about a year ago and covered it with primer and paint. So far I do not see any signs of the rust coming back. One thing you should do though is to make sure you put a plastic tarp or polyethylene film underneath what you are applying the Ospho too because it will eat concrete. I can attest to this fact because I ordered a gallon from Amazon and when UPS delivered it the box was wet and the driver sat the box down on my concrete porch and it immediately started to eat the concrete. Luckily I had read a post from another youtube video where someone had the same problem so I just refused the shipment and immediately washed the concrete off with water. I was able to go buy a gallon from my local TruValue hardware store.
I believe it leaches the lime out of the concrete.
FYI Ospho turns iron oxide (rust) into iron phosphate which is inert. Rust will not form again and the surface is primed for painting.
I think you meant iron phosphate. Ospho is phosphoric acid.
@@802Garage Yes you are correct, that's what I meant. Thanks
@@glenpaul3606 No worries knew you were trying to share some good info. :D
Will Oil based paint. Not epoxy. If not using oil based, reapply Ospho, let sit for a few minutes and wash away with water like you was washing a car. I hate that they don't say this. If you paint over Ospho with any paint, primer that's not oil based it will bubble and not stick. Ask me how I know!!
It tells you on the jug - bottle to use oil based primer.
Great video. Thanks for the info. Just wish you posted a link on where to great the big jug of it. But very cool. Thanks
Its real easy to find man. Here's a link to Google that brings it up a lot.
www.google.com/search?q=ospho+skyco+rust+stopper&rlz=1C1CHZN_enUS919US919&oq=Ospho+Skyco+Rust+Stopper&aqs=chrome.0.0j69i61l2.528j0j1&sourceid=chrome&ie=UTF-8
@@RedlineStands Thank you. 👍
I got mine on Amazon for $40
Does Klean Strip Concrete & Metal Prep leave behind some latex or acrylic coating? Is there a rust converter that only uses acid? Seems like some latex coating will negate the ability to use a primer. Ultimately, you're limited to the adhesion of that latex or acrylic.
This video is 5 years old so I'm not sure if you will respond. It's regarding use of the Ospho.
I was using the Ospho exactly like you were in this video. I was spraying Ospho into cavities I could not reach. I would then coat with epoxy primer and paint. NOW I am seeing that the paint can lift off from improper use of the product. Now that 5 years has past, what is your experience with Ospho, epoxy primer and any paint lift issues.
I have experienced no issues with my epoxy primer lifting off anywhere on the car, but I also haven't been keeping my car outdoors, and I have yet to paint it as well.
What are the guidelines lines to painting over it, after it dries? Bout to do this in my gto trunk.
I would also like to know this. From what I have seen you just primer or paint right over the metal after the ospho dries. If it is still a little wet or damp after 24 hours then wipe it clean then paint or primer. You can probably also sand or scuff the metal after the ospho dries and its probably a good idea to use a degreaser in between those steps. Anyone else have any other suggestions?
Can you use it next to painted surfaces, door gaskets, or plastic?
What does the temperature have to be to use this product? How warm outside does it need to be?
Can you sandblast then spray ospho on the sandblasted area....also do you have to pressure wash the ospho off
my left ear was dissapointed
Will this damage existing paint ?
so if you spray into areas that are inaccesable ,how do you prime and paint over it?
you spray paint where you spray ospho, if you can spray the ospho why can’t you spray the paint in there?
And if you can't the Ospho will protect the area from rust as long as it was able to chemically convert the rust.
I was hoping to get a good before and after review, :-(
I'd love to try this stuff in Australia as we just get ripped off for inferior products but that bottle you have there has to be sent from.the US as nobody in Australia sells it.and it will cost well over $350 AUD.....so yeah, pretty jealous of how you yanks get good restoration products cheap.
You can buy same stuff almost at hardware store or home depot. If it's green is same deal.
About $20 gallon here in USA.
@@glenpaul3606 I buy mine from Ace. Idk how many repair videos I've saw where they don't treat the rust under the panel they replace. Even big shows like power Nation, etc. Man you gotta kill that shit or it'll rot off in a year. Glad you do shit right man.
What have you done to the white residue left behind?
In this video, I later sandblasted it all away. I'm using this stuff to treat rust in places I can't sandblast or paint. The label on the jug actually says you can treat the rust and then paint right over it. I don't think that's the proper way to restore anything, but we've got to be realistic and acknowledge there's just some spots we cannot access.
I simply brushed it off the 500 gal gas tank I had then painted with Rustoleum oil based paint.
Does anyone know if you can apply bondo over it or do you still have to take it down to bare metal?
While I don't know if that's possible, I can tell you I'd never think of trying it. Too must risk in the possibility of ruining a future paint job.
SEM makes a rustMort gallon
Does it hurt rubber parts in cars?
No. Just don't soak in it. Petroleum and opsho don't mix well. Gotta be a oil free surface. Use brake kleen. Etc to get rid of oil and grease.
can it be used on surfaces that are painted but have small rust spots ? (without sanding etd )
it will peel the paint if you do
I've used it when the paint is Good. Like a rust bubble. Used a syringe and just pierced it and shot some ospho in there.
@@silvanoramirez4921 yes if the paint is not good. I should've clarified. I used in not nice painting months on rust bubbles that I was going to fix in spring summer. I've used it in a syringe and just pierced bubbles and put some on it. I've also used PB blaster but it needs reapplying after a month or so.
@@kitjasabsgabs1830 im having same issue, some rust bubble forming and i'm trying to find best way to prevent further spread or development. How is yours holding so far?
@@pc8472 Black and sealed. No rust. Mine had a few bubbles I saw a week ago right under bottom of carriage top. And I do not want to take that off and have to reseal it and put back. Idk who did it but they did a perfect job sealing it. Ant see it unless u look hard, and it's still 100%. Do what I said above. Poke the bubble and get some Ospho is there. Then you can fix it next spring. Mine started cause of the stainless wheel arch pieces that they SCREWD in the fender lip and DIDNT put any epoxy primer, etc so it wouldn't rust. And the gasket is not silicone. It was vinyl. So dirt etc got back there and made a few spots. My father got a new hobart welder to weld up his 31 model A and I'm going to weld in New pieces. Small holes. Smaller than a quarter. But with the price of resin, hardener, fiberglass etc welding is way faster, cheaper. I also use CarRep 2 part epoxy primer and clear. It has no chamber to pop with cap on bottom. It has NO shelf life. It lasts forever. That 2k primer is good but u got 24 hrs kept in fridge at max and it's done. Costs same, buy on Amazon. Ospho Ace hardware. Great stuff. Then mix 1 quart of any new or used oil, 1 quart of any new used trans fluid, not post surgery but real trans fluid lmfao, 1 tube or tub of grease like grease gun or wheel bearing, 1 wax toilet flange gasket. Mix all in pot, heat and mix. Then spray, brush etc. Will not ever rust, costs less than $6 if using drained oil and fluid. And lasts alot longer than 3m Cavity wax, Blaster, Fluid Film etc. Tape drain holes in doors and fill with mineral, baby oil. Or meted Vaseline. Let soak for few days then drain and save for next time. Used this for 20 years on all things that I didn't want rusty. Knock off heavy rust, clean with degreaser. Ospho to convert surface or deeper rust and then I use Eastwood internal frame, then farm implement paint with 3 capsules of hardener. That paint will kill 36 grit flapper. Or JD black paint for machinery. Dozers etc. Then this recipe. Any more info needed, let me know. I help anybody save their rides. These newer vehicles suck. I'll never have one. I'll keep buying all the Town cars I can find.
Thanks to Steve for pointing out the importance of not inhaling this stuff. I think he's right, a good respirator is a solid idea if you're going to spray this stuff.
Sprayed alot of it. Not bad unless it's blowing at you. Very safe product. It's for the dumb. Like the warning on preparation H, Do not eat or use internally. Most know better, for others, read the label!!
@@kitjasabsgabs1830 lol is'nt that the truth
@@CinHalCedHerChance unfortunately yes. I wandered as a 80s kid pooping reading the labels of different bathroom toiletries why do they have to say do not eat, ingest or use on the inside of body? Like as a 10 year old kid I was like Nah I won't put Monistat 7 in my mouth. I did have a great squirter gun when the family got together and I came running out squirting the family with my moms duche bottle. I didn't realize until later why they was so mad, especially Mom. I did after I learned what it's used for. Ahh to be a kid before the internet ruined it for kids and they getting fatter like their parents, but tell my wife who's 5ft3 and weighs 105 Gosh your so skinny. Like she don't walk by you at same height weighing 320 saying gosh you so fat. It's a different world today. Very confusing and different.
@@kitjasabsgabs1830 lol @ Mom's "bottle" .. agreed about life before the internet. I thought it was incredible when I first got the internet in '96, but after 2014/2015 and social media, I realized it was the worst thing for us and it's only making people more stupid and that's terrifying.
Video would be far better without the annoying advertisement line at the bottom!
This stuff okay to use on differentials?
Knock the heavy off. But don't sand or grind bare. Needs rust to work. Hit with a hammer or scaler, what's left is Ospho Dinner.
Thanks Dude 😎 👍
get the damn banner out of the way...
I'm about to use it on a 66 vw beetle
Probably IS muriatic acid based..
Just sprayed the entire underside of my truck with it
Using on my bus floor
I can smell this video lol
Make sure you do a proper rinse off before you try to paint it if the step isn’t done, your paint will bubble within the first year hard learning lesson
I am all about marketing and such but that banner is a huge distraction and in the way. My 2 cents.
made in cleveland ohio
Sweet another video where dude yaps about it with no real result video. Gay!
I don't know how many times I've said this. If you don't like the video, go make your own damn video and leave me alone...please
No useful