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For anybody watching this video, please do not do what this guy did. I am a certified HVAC technician, and you do not enable the clutch while it’s empty and dry. The clutch will automatically engage once refrigerant is detected and pressure is built up inside the system. By shorting out the switch contacts, your prematurely, engaging the clutch and running it dry without refrigerant. This is equivalent to running your engine without oil. Do not follow this clowns mistakes. I am certified 608 universal and 609 MVAC. A leak this big is also very foolish to try and deal with stop leak.

There are generally two types of AC stop leaks. One is essentially just PAG oil and the other type reacts to moisture, theoretically at the pin hole leak. The PAG oil types will only work for minor rubber o-ring seal leaks. The latter will work for leaks in metal. If you use the latter type, you will need to vacuum the system (to boil out moisture), otherwise you will clog your AC dryer, or worse, accum/conden/orifice. Adding more and more stop leak with PAG will cause harm if done too many times. You might want to view the manuf's method for adding R134a. I do not know of a case where you need to turn on your condenser. Adding on the low side will bring up the pressure to satisfy the pressure switch (add vapor/not liquid). Your manuf service manual can verify if this is the case for your vehicle. I believe in some vehicles it would be best not to jumper and run the system dry. Also add with gauges or by weight. Weight method is the best if you can reclaim the R134A or if the system is empty. Gauge method is good if you are a little low. You can rent (free) a gauge set and a vacuum pump at your local parts store and do the job correctly. There are a ton of videos showing how to use them correctly with no guessing. It will take time to tell if a stop leak "hail mary" worked. You cannot tell if it worked by running over short period of time. No stop leak will work for a system that leaks out over a period of a couple of hours. It is best used for a system that has a much slower leak. The best thing to do is to add some dye and verify where the leak is. If it is in the pump or condenser it is an easy enough job to replace o-rings or even the condenser/pump if aftermarket parts are used. If it is in the accum then it is not an easy fix. You cannot usually view a accum leak because it is buried in the dash, but you can see the dye in the condensation drips on the ground.

I was super surprised with the supertech AC stop leak. It worked and I had a little more than usual leak. For the price, it's a steal and works.

That is a very serious leak ..most cars I have had leaks lasted 6 months or more...I would add a can of stop leak to a slow leak maybe,but for this leak I would have added die to locate all leaks and replace parts and seals than recharge..great demo on product. Thanks

Depends where the leak is,if it's o rings or gaskets or maybe rubber hoses, that stop leak MAY work but if it's a metal line or condenser, evaporator leak,you need a stop leak that will stop a metal leak, though those types of stop leak will eventually clog the system but .!

Stop leak works great for SMALL leaks like old hoses and cracks in the condenser soldering but large leaks as stated on the container requires part replacement. But the stuff works is the point here. It’s not snake oil but not a magic wand either lol.

According to a garage my car had an old leaky condenser and possibly o-ring leaks around the compressor. This is after putting dye into the system, they couldn't give me any definitive but definitely wanted a lot of money from me to fix the problem for good. A can of stop leak and some more refrigerant did the job just fine and it's been over a year.

A leak that is big enough to drain the system in 15 minutes can not be fixed with sealer. Even I know that.

That MacGyver staple move was nice!

This stuff absolutely worked for me I put it in and put two cans in a PT cruiser and fill the rest with freon it has been over 3 years and it is still ice cold ac and no issues with pump

I can confirm it works on a small leak not big leaks. It fixed my 18 year old car that had a small leak

i had a slow leak in my truck and put some oreily blue devil stop leak and it fixed it for 3 summers. Before i had to recharged every summer.

It's slowed it down for me but it doesn't "seal" things up

Of it all leaks or up within about two weeks or less to need to make physical repairs like o-rings etc.. no leak sealer well fix that.. is only for very small leaks. Line in my car where the gas leaks or over two years.

How can I get same of the stop leak,am in Ghana

You did not have to use the staple just add a little bit of freon and the compressor will kick in. Then you can do procedures with the rest

On my Ford escape mechanic is saying that there is a ac leak and that it will be a 2 day job cause is under the dash of the passenger side.bu the glove compartment. $1000 job. What you think?

thank you for this vid!!

Good info thanks

I just have a tiny pinhole in my condenser and it takes like two weeks for it to leak enough to be warm so I’m thinking this should work for me…

How do i get this product am in Nigeria

Did you let it run during the wait times (15 mins & 1 hour)?

Toyota's seem to have the most durable ac systems. I've seen 25 year old Toyota's in Florida with all original systems and one recharge in 25 years 😎

So you can not add Freon or stop leak unless you pull a vacuum to remove the moisture. However, you can not pull a vacuum because you have a leak. How do you do this? So, I am at the same position you were an AC completely empty with a leak. Would love to try stop leak but I know I can not pull a vacuum to remove the moisture. Thoughts?

It sounds like it didn't work in this case. Maybe for a smaller leak.

how about that pretty aggressive camshaft?

I always read (can't cite the source...too long ago) that you should not invert the containers which dumps liquid refrigerant into the system causing "temperature shock", or sending non compressable liquid straight to the compressor. Any thoughts?

Vacuuming a leaky system will "boil off" the moisture there but at the same time will suck in moisture contained in the air leaking IN. So how DO you get moisture out of a leaking AC system?

will it damage the new compressor i installed if i try to run it and spray it with soapy water. Before taking it to get re-gassed?

I like this guy's video because he tells it as it is. Today, after 2 years of putting up with no AC, I used proper gauges to fill the system with pure gas, no sealer. A garage, 2 years ago, told me a new compressor was needed (leaks between moving seals). So I'll see what happens. It might leak out in 15 minutes. If so, I probably need a new compressor and other seals. However, if it lasts longer I know it's a slow leak, like a slow puncture that can be topped up. BTW can "stopleak" totally ruin the car's AC system?.

Question : So for the last can . How do you know how much you are adding ?

I have 1 question. If you know that there's a huge leak and 15 minutes later it would be empty, its 1.) a waste of money and 2.) Its irresponsible to let it leak into the atmosphere. I know its just testing to see if it works but it should have been tested on a small leak or atleast a leak detector to test for a leak with a recovery unit on stand-by.

What’s the plastic Walmart gauge for?

So if my clutch is spinning then the compressor is working? My clutch spins with the ac turned on or off

I was hoping it would seal the leak!

Your video was useful

Why did you put three different gas. And how did you put all at once?

compressor jammed after 20 minutes ... 2000 USD of damages and 8 hours of work to fix everything ...

I have a 2013 XF and I can’t find the plug for the compressor. Any help? Thank you.

Hopefully you see this and can reply. I have a leak on mine and put some refrigerant with UV dye in it and only place as if now I see glowing is the vents inside at dash. What would that be if so??

What can I do if my system doesn't hold any pressure at all? It has leaked all Freon and can't hold a thing.

How much for stop leak product?

A week and it drains out? I would say it's a waste of money and doesn't work.

I’m trying to figure out if u can use the stop leak more than twice? Without messing anything up like clogging?

I have a 04 Honda Accord can i do dat

What make and model is that car

Is it essential to hold the can upside down?

Will it fix a small compressor leak, it holds pressure for 3 to 5 days

It works for the folks that make and sell it.

I been doubtful since my fereon leaked in about a month or 2, and that's aggressive in my book. My dad had creasida 1991 and had to refill it's fereon only twice in 25 years of using it. Just put one 30 mo Italian stop leak and hoping this works man.. I have been let down my Toyota. It was the best once upon a time.

Sure would hate to fix it right. You should try transmission rebuild in a bottle next.

I have an 07 Dodge Caliber the AC was working fine for years. Then I had to have the alternator replaced in order to do that the shop had to move the AC compressor which involved interfering with the seals on the compressor which they replaced but then AC started leaking we thought that the seal is leaking because they were aftermarket instead of OEM I replace the seals with Lem seals they got the car working with the air conditioner working yesterday said that it was putting temperature out about 45° and I paid for the car and pick it up this morning and it's not producing any cold are all he says he can't find any leaks anywhere so now he's he's saying it's probably the evaporator coil in the dash and it's going to cost like $900 to repair. I don't have that kind of money. I don't know what's involved in taking this car apart myself I'm just wondering if an ACC lore is an option for me it took approximately all night to lose the ac refrigerant which is about right for the car it would sit overnight and lose the refrigerant I'm wondering if an AC stop leak component has any chance of fixing this or am I just screwed and have to replace the AC evaporator thing in dash

That shit don’t work never does

It is not a freon

Because who needs to pull a vacuum? SMH.

It would cool a lot better if you actually pulled a vacuum

Never turn freon bottle upside down when charging you are putting liquid in it and can knock your compressor out

I have a slow leak in a 2000 Silverado. Blows cold for a few days. Just ordered the above spot leak. Will report back in a few weeks.

I believe the sticker on your car indicated using 1 lb of r134, which is equal to a volume of 12 oz

DO NOT USE STOP LEAK

Dude u said it didn't work then u say it works. Lol it doesn't work

Waste of time video. Does it last though

You’re not supposed to fill the Freon upside down

no they dont ,,, waist of money ,,,, very very very rare if it does 99.9 percent chance it wont work