Leak Saver - Leak Shot Automotive - Leak Sealant and Additive Injector - Made for Specialized Automotive Air-Conditioner System Repair - Non-Contaminating CO2 Cartridges - USA Made

Works like it should, recovered my AC for a while. Be careful when you press, its powerful, if you plan on reusing several time, it will empty fast.

I was surprised to see that you are required to screw the CO2 cartridge straight into the valve with your bare hands. Usually these types of cylinders use a screw/saddle arrangement or a case that surrounds it...for leverage and to protect your hand as it pushes the cylinder into the piercing needle/valve port simultaneously...like CO2 pellet launchers or NO2 whip cream canisters. I thought that's what the black cartridge holder would do with this...but that's not the case. I tried the first one and thought I had it up against the piercing valve and gave it a quick twist. It must not have been close enough because it just blew back on my hand and I dropped it before it froze my fingers. My neighbor was watching as he was curious about the Leak Saver I purchased this to install, and he offered to loan me a can of refrigerant to use instead, so I never tried the 2nd cartridge. The Leak Saver seems to be working well and I even bought a second one for my other car...and if you have a can of refrigerant to use instead I would suggest that. If you have only this...WEAR GLOVES!! As this is not returnable (read the fine print !!)...I hope the 2nd cartridge will work because I have other systems that I'd like to use Leak Saver on (and even use it as a drain line clearance tool)...but living in a state where I have no access to refrigerant unless I travel out of state to purchase it. I also discovered there's a Pro version with a metal body for only a few bucks more that isn't sold on here. Something I wish I knew earlier as I was worried about twisting the cartridge in too far and stripping it or breaking the plastic body (I have this type of thing happen pretty often when using my bear paws on small items like this)...so I probably didn't give it the full oomph it needed to pierce and seat itself. If you have a can of refrigerant...use that. Otherwise search for the Pro version. Or...wear gloves and hope it doesn't break. EDIT 9/23/24: The company reached out to me and offered a refund on my entire purchase. The Leak Saver itself seems to be working it's magic and I'm more than happy with it...and could not in good conscience accept such a gracious offer. I instead accepted a refund for the Leak Shot only and will be going to their website to purchase the Leak Shot Pro (all metal body) and some more Leak Saver. I did raise my rating to reflect the commitment the folks at LeakSaver have to their customers and the products they offer. Buy with confidence.

I used this product on an automotive a/c system. Following the instructions directly from the sheet, as soon as I tightened the CO2 cartridge down it started to leak. Not knowing how much was being released or may be required for the injection into the system, I assembled everything and did not puncture the CO2 cartridge until everything was in place on the car. Punctured the seal and again a prolific leak started before pulling the trigger. I do think I got the sealant into the system but it was probably luck of the draw. The idea this thing could hold pressure from the cartridge over time is ridiculous. Don't think it is that poorly engineered, it is just shoddy manufacturing. Will report after a few days of driving regarding whether or not the a/c performance is improved.

Great works as it supposed to!!

Purchase the leak saver and leak shot with adapter. Followed the instructions and tried both CO2 canisters. Would not inject the product into my system. I contacted the company and they immediately replaced the leak shot and canisters. They also offered me a full refund. Not sure if it solved my problem yet, but would recommend them based on their response to my issues alone.