BlueDevil Products Red Angel 49496 A/C Stop Leak - 2 Ounce

I don't trust things like this, probably because I can not figure out how they work, but I tried it, and it really does work.I had a small leak, enough to deplete one-third of the refrigerant in my old 1993 Audi in just four months. That amounts to about 50g per month, and the sniffer could not locate the leak. To make matters worse, these cars lack low-pressure ports for adding up refrigerant. Last summer I evacuated the system and added just half of the Red Angel because I firmly believe these products can damage an AC compressor. Eight months later, the AC still works as it should.Great product!

Good stuff works well

There was a slow leak in the condenser. The stop leak was installed 2 days ago and seems to be working. I'll check back in a month or so to update.

Seems to work. No longer freon smell inside cabin. A/C holding up. Time will tell. Must use recommended oil injetor.

Held vacuum good for long time so I was hopful that this was going to work. drove car 60mile with A/C on after stop leak and freon was installed .24hrs later was low on freon again .Evaporator or expansion block appear to be my leak so dash will have to come out to fix . Wasted 45bucks total Good luck to anyone trying this product.

My 2002 Mercedes C230 has had a very slow refrigerant leak for years. Every spring like clockwork I would need a freon recharge, and it would take me through the whole year until the next spring.I asked the mechanic about it and he said there were no signs of a leak in the engine bay and it was probably inside the dash somewhere, which he said would be such a nightmare to get at it, it would be cheaper & easier to recharge the car every year for the next 10 years. I believed him, I'm pretty big on DIY stuff and after doing some research it looked like the entire car was built around this leaky air conditioner component.Last year I figured I'd take gamble on this stuff. I had the car recharged in early spring, then I waited until early fall to put it into the system since I figured by then enough freon would've leaked out i wouldn't have to worry about over filling the system.It's now Spring 2024, it's 90 degrees out and I still have icy cold AC without needing to pay for a recharge. I'm very happy with this product.

Works great!

Worked great.. stopped the leaky seal in my a/c ..