How To Clean & Restore Coolant Tank - PERMANENTLY 

Thanks man! ... Now I have the cleanest 1999 dodge Dakota coolant tank in town. My neighbors keep coming over to check it out and sometimes they take pictures..

Nice job. Helpful for those of us driving 20+ year old cars.

I'm restoring a 46 year old truck this video is just what I was looking for, thanks!

I wanted to thank you. After several different levels of attempts, soaps, bleach, and had minimal success with acetone and bolts, I went to a home store and got some of your recommended sulfamic acid crystals ( in the flooring grout section). I mixed it to medium concentration in the tank, then again the next day at high concentration rate for the last little dirty patches inside of the tank. I did agitate it a few times to get the deep carbon builds and rust stains out, but just sitting overnight full did most of the work. Much improved! Greatly appreciate it.

EXCELLENT! Just another 29,999 parts to do and the car will be as good as the day it drove out the showroom :)

great job , I see the need for this when your restoring something and can't buy a new one . I see the comments from others here that don't get it ! I appreciate your time .

Wow the acid removed all the scratches and even changed the manufacturer numbers also.

Cleanest Tank I Have Ever Seen!!....Good Job!!

First video I’ve taken the time to comment and like in a long time. 👌🏽

Love the dishwasher scene 🤣 brave man.

This is amazing my guy. I will have to try this when I'm working on my audi with it's freaking ninety dollar coolant reservoir.

This is a good video missing some VERY crucial details. 1) what is the H3NSO3 Activator? Nowhere on here or the inter web can I find any details on what that is. 2) what is the concentration of the H3NSO3??? I just wasted $14 on some H3NSO3 for a translucent fuel tank cleaning with Zero results after 24 hours. I imagine a lot of other people are going to have the same results without this crucial detail. Is it 3/4 cup per gallon? Stronger or weaker. It would be easy to add what you used to the description. Thanks.

Thanks. Great video. Straight to point and no annoying music.

I was more interested in the comment section, but now im going to clean coolant tank, lol

*Great job !!* *Thanks for sharing.*

The result is awesome!! Been trying ways to do that. I thought you've bought a new tank in this video~🤣

Impressive result and something I will use restoring cars. Thanks !

Love the inside dishwasher part ! :)

man that looks more new than brand new.. great work

Could you share what's the activator? And also the dilution medium and ratio for the mixture? Thank you very much in advance!

I now know what it looks like, inside a dishwasher, during a cycle! Lmao 😅 That's awesome 👍 great video

For those who are asking, sulfamic acid can be bought at a hardware big box store in crystal form. It's normally used to clean rust and grout and mortar haze. A 1lb. tub of sulfamic crystals is less than $8. All you do is follow the instructions and dissolve it in water. Plastic itself is non-reactive to acids; that's why containers for acid products are made of plastic (and it's cheaper than glass and won't shatter). Plastic is engineered to be fairly resistant to many solvents, so you're not going to run into trouble with it being chemically damaged unless you start using things like acetone or paint stripper.

Great video, but a little detail explaining concentration of H₃NSO₃ in the water-acid mixture would definitely bring some clarity and eliminate the guesswork.

Awesome Video, thanks for taking the time to make it. That's quite a useful trick to know.

I could see on an older car where a new part is obsolete this could be the answer. Nice one!

Nice, I’m impressed. Thanks. Mike.

nice video and great job,i prefer to restore it like you did in the video than replace it,original part is original part and nothing can be better than the original ;)

Great job! Now you have to be so thorough with the rest of the vehicle.

The dishwasher part was a great touch 👍👍

Looks like the cleaning process also turned the brass nipple inserts silver and raised the molded tank lettering, too. Impressive! /s

Excellent Info ! Since the Sulfamic Acid won't react to plastic, would this be an excellent way to clean a gas tank (a removed gas tank off a small vehicle), my 97 Altima has been sitting up so long with some gas in it, when I replaced the fuel pump (because it stopped working) the fuel pump stopped working because of varnish goo in the gas, so I have to remove the tank and clean it, scrub it actually, that is how thick the varnish film is, must be scrubbed. Im thinking, to pouring enough of the acid in the tank to submerge the bottom, let it sit for 24 hrs later, then flip it and let it sit for another 24 hours, then rinse it out with some baking soda and water to change the remaining acid to a base. What do you think? Good Idea or Bad Bad Idea - and if Bad can you explain why? Thanks for you help, very much apprecated!

Great job at contaminating your dishwasher. 👍 Those carcinogens lingering in the dishwasher are going to really add that flavour we all sought after to your foodware!

Restoring the coolant tank costed me more then an new one, had to buy acid and a dishwasher

After having done all this, I wouldn't put this back into the car...I'd rather leave it on my desk just to show others how insane I could become

Can anyone here share the mixing ratio of water and the acid? is it 1 to 1 or 1 to 2? Thanks in advance to anyone who can share!

What was used to get that so clean love it thank you

soaking anything with a rust stain in vinegar works pretty good too

That will work, providing the plastic isn't degraded and brittle from years of heat in the engine compartment. I've seen some tanks that just fall apart.

I needed this video thank you.

Wow, thats impressive, thanks for the video.

It took hours for this man to clean a reservoir but took me 2 hours to clean and restore shine to the whole engine bay

Thats insane. Woulda never believed that was possible.

Can clean one using Red Devil crystal lye with clorox added. Any hydrocarbons, glycerins such as ethylene glycol are rendered with the lye, just as lye and fats/oils are used in soap making, and the clorox is a bleaching agent that actually adds power when mixed into the hydroxide of the crystal lye.

Great job, need to tdo this for my power steering reservoir.

Thanks man. Expansion tanks for my car aren’t made anymore and cost 150 bucks so this is handy. 👍🏻

Good tutorial, I did the same and just bought a new one.

I’m stunned. This is amazing,

Bet you had the cleanest GoPro around when you were finished the video :D Super informative though, thanks for sharing!

This felt like a cartel style cleaning

I like the "Vision On" TV show style filming.

hello, congratulations for the video. Could you tell me what is the concentration of acid in the solution used for cleaning in the video?

Hi there I bought 1 kg of sulfamic acid in the form of a powder. In what proportions should you mix it in 10 liters of water? I want to whiten the coolant tank from my Porsche 944 in a large bucket

Have not used Sulfamic Acid before, worth a look.

In spite of some of the comments left I found it useful to know more especially if you cannot obtain a new tank. I don't spose my Lada Niva will mind if I leave it how it is though. Thanks for your efforts.

I am genuinly impressed

it is interesting that even the brass tips turned into steel ones :D

Ive always wondered how to get these yellowing tanks back clear again. This is awesome.. definitely subscribing!

Thank you ! This video is perfect ! No music concert ! Thank youuuuu !

In the beginning of your video you said use sulfamic acid activator and shake for 2 minutes before moving to the second step but I cannot find anything called sulfamic acid activator. Did you use peroxide or what did you use that you were calling the activator?

You got some techniques man 👍👍

Impressive how the acid makes the plastic get new mold stampings than before.... and scratches disapear =)

what chemical did you use & for how long was the plastic container dipped. Thanks for the sharing the good idea

Love the dishwasher scene 😂😂😂😂😂

Awesome, where do you dump or dispose the chemical once you’re done with it?

If we could only clean up society this easily.

It works guys, I’ve just used the bar keepers friend, let it sit overnight, and put a cloth inside and shook for around 2 mins, and came out looking pretty much like new!!

It was beneficial. Thanks for sharing.

God tutorial,BTW, what kinds of liquids did you used.

The original pressurized coolant reservoir on my 1981 Porsche 924 Turbo had visible cracks but they weren’t all the way through the plastic so it was still holding pressure. Definitely a ticking time bomb though. I needed to figure out a replacement. As far as I could tell these were no longer available. Luckily A1 VW Rabbits use the same shape with the only difference that one of the hose connections is a different size. I used a hose adapter and everything’s worked great.

Uses same acid as used in Lime-A-Way. Can this be used as a substitute if you have it on hand?

That was pretty awesome!

Haha you must have a very chill wife. If I washed acid soaked car parts in our dishwasher my misses would kill me.

Well there’s six minutes I won’t get back.

Brilliant! Well done. Thanks for sharing.

The pinkish red coolant in my 2014 Camry always looks super clean. Car runs great. Never overheats. Does the reservoir coolant circulate all the time?

Love this dude no background stupid music and he show you the solution directly. Thank you for the best video useful on you tube ever

Next step: How to get the motor into the dishwasher...

A very nicely done project you have there. It could even make a difference between a 2nd to 1st place in a car show, what was the additive to initiate the cleaning / reaction? Ty I wish I knew this year’s ago when I owned my Audi coupé but then you have the experience to extract the rust and useless sediment of the old antifreeze etc. Again thank you for sharing this with us! Phil 🇬🇧

Nice. Now it's time to clean the rest of the engine bay. 😁👍

your filming is awesome 👌👌

Good video, thank you. Sometimes when restoring old cars this might be your only option as parts are discontinued.

Great video. How did you get the camera crew into the dishwasher ?

Very nice, looks like new again. Is H3NSO3 safe if accidentally spilled to painted parts, such as car body?

Excellent, thank you.

Cool! Though getting acid around my place +effort needed to do this would cost more than just getting new tank from parts store.

Does the acid eat the alumnus pipes?

How does he make the H3NSO3 Activator shown at 0:48 in the video? Or you can buy the H3NSO3 Activator?

Dishwasher shot was cool!

So thats how my plates feel when I wash them.

So you just bought a new one. Cool vid dude.

Please: What's the first spray? What is the product that you wash inside first? Whats the concentration on the Peroxide? Do you mix with water or plain? Cheers.

Thank you for the video. I have Thunderbirds from the 90s and their reservoirs arent made anymore.

Dude, you are probably the only one to video record inside a dishwasher. Every dishwasher should come with a camera.

Incredibly impressive! At the beginning, the "H3NSO3 Activator"... is that any different than the "H3NSO3 Acid"? Is it a different concentration? Or is it just the same and you're simply pre-rinsing it before the full soak? Thanks!

I see a lot of guys giving you agro over this, but I can see your point. I restore bikes. Some of the bikes I have are rare and the parts are no longer available, so this information is very useful to me. What type of acid is this that you used?

It's a new recipient 🤗 Succes 👍

Es acido sulfámico, H3NSO3 se usa entre otras cosas para remover oxido.

Wow! That's awesome! I bet everyone who sees it would think it's new. Nicely done!

excellent job!

Thanks for the explanation