Leak Saver Leak Shot Dye Inject Kit - Complete UV Dye Refrigerant Leak Detection Kit for Automotive, Home, Commercial, Marine Air Conditioner, and Refrigeration Systems - Made in The USA

Edit: seller was prompt and went above and beyond handling my concern. I've also now used the other components of the kit to do a dye injection and it is super simple and clean. Will be inspecting for the leak this evening.Original: The dye and injection parts seem like high quality, but the flashlight is defective. Tried two sets of batteries, triple checked the assembly of itand cannot find any reason it shouldn't work. Wanted to contact seller but Amazon says no returns/exchanges on this due to the hazardous nature of it. Bought the kit trusting the light would be of high quality based on the Leak Saver's apparent pride in their product rather than just buying a random light off Amazon of unknown quality.

This is obviously the dye only but it is very effective and easy to use. Used it for my trucks AC and it helped me find a leak near the evaporator to condenser line.

Product page states "The Leak Saver injects directly and easily into the system with a basic manifold gauge set" which is not true with automotive systems. This information should be mentioned in the product page, especially if the product can't be returned. The $32 injector shot adapter is required, so having known that I would have bought the kit that included both and an LED light for a similar price. Now I can't even exchange this for the product I would have gotten had the page possessed pertinent information.Update: Customer service reached out and offered me an apology and a full refund which I greatly appreciated. Hopefully the product page will be updated soon to reflect the need for an adapter. I did end up purchasing the shot injector and it did work fairly well for injecting the dye. There was no spraying or leaking and it went in very quick. Only problem was I still couldn't find the leak, but it was still loosing charge within a few days. I followed the instructions and ran the system for an hour with a new charge but couldn't locate anything that glowed under UV on the system. Only thing left to check was the evaporator, which did have some glowing specs on it, but nothing definitive. The dye does glow brightly when exposed to UV light, so I'm not sure why I couldn't find anything on any of the parts. I can't say the dye doesn't work, the bottom of my hood glowed very bright after oil from the system sprayed on it during removal. I have another car that also needs AC love so hopefully I will have better results with it.

Did the trick needed to add dye to system that didn't show a leak when pressurized this should do the trick to locate it.

Very bad quality. Bought this item and tried it. The gun broke and was unable to use. No returns allowed either, so I'm stick with it. Be cautious !

The product was easy enough to use. I tested it before putting it in the system and it certainly lights up when you hit it with the UV flashlight. It attached to the low side charging valve no problem, I hooked up the gauges, used a cylinder of refrigerant to push it into the system, all that worked as advertised. I let the system run for over an hour without stopping. But I still can't find the leak.

Great product, though for cars with 134a, the directions insisting on connecting the adapter first could cause those who blindly trust directions to dump the product out before it can be used when connecting in series with a 134a line set. In that case, the different adapter (that also has to press the Schrader valve) will release the dye when it is tightened on, so everything else should already be connected before the adapter is tightened onto the male end.

We injected the UV dye into our home AC using a manifold guage, and you could see when it got sucked out of the tube. Then the system ran for over an hour while I kept checking for evidence of the leak. When I opened up the air handler to look at the coil, there was a loud continuous hissing, indicating a leak. However I could not see any dye glowing with the UV light. Because of the hissing, we were convinced there was a leak in the coil, so we cut it out and found the leak on the back side which explains why we couldn't see the dye. Note that you need a black light to see the dye and the black light is not included.