ComStar Leak Bubbles Yellow HVAC & Gas Detector, Fastest-Acting Leak Detector in Today's Market - Safe, Non-Corrosive, Long-Lasting Bubbles, Detects Micro Leaks, Made in USA, 1 Quart Spray (90-204)

I don't normally write reviews, but this was exceptional and warranted me taking the time to write one. I'm an independent owner operator of a 2020 Peterbilt 579, which is riddled with the ridiculous, cheap plastic push to connect fittings for the air brake system. I despise air leaks, and having to wait for my truck to build air pressure when I first crank it. My rule of thumb is if it can't hold at least 100lbs of air pressure for 3 days then the system needs attention. This is a tight standard by most. For years I have depended on soapy water solution and have even tried adding corn syrup. Now that I have found this, I will never use soapy water for anything other than finding tire air leaks. This stuff is hands down the most efficient solution I've come across. Within 15 minutes of opening the bottle I had located 5 air leaks on my truck that soapy water didn't reveal. It might be pricey compared to the alternative, but way more effective. I hope this saves another trucker like me some headaches. Way more important things to worry over than an air leak.

Sure, soapy water will detect leaks, but let me tell you, this product will find leaks that soapy water will miss. I had the opportunity to use this on my tire valves, and I discovered a minuscule air leak that didn't show up at all using soapy water. This product is fantastic; it detects virtually any kind of leak, and does so extremely well. Had I used soapy water instead of this product, I would never have known that one of my tires was slowly leaking air. The leak was so small that it required that I use a magnifying glass to see the escaping bubbles. With that said, although the leak was about as tiny as you could possibly get, it would have resulted in one of my tires losing a substantial amount of air over time. This stuff isn't cheap, but it is most certainly effective. Simply spray the area in question, and look for bubbles to form. You can either use the spray or stream mode. When I used the spray mode, I didn't see the tiny bubbles escaping from my tire. When I used the stream mode and a magnifying glass, the leaky bubbles became apparent. I consider this money well spent. It's a step up from using soapy dish water, and the convenient spray bottle will last a very long time.

Really finds a leak. Just that much better than just soap and water.

Great product with outstanding results. I have used soap bubbles for decades to find leaks. I had a dingy that had developed a slow leak. After checking the tubes and most likely culprit, the valves I could not find it. I sprayed on the valves and nothing. Went over the tubes and found it on a seam. Tried with soap solution and it did not show up. Spraying and brushing a bit helped find my leak

Must buy, found leaks when helping son install system.