Supercool Multi Purpose Total Dye Universal UV Light Leak Detector Dye 29.5ml

Does what it says on the tin/bottle, unique product just what we wanted

It is good value and

Works perfectly and i found the leak with it.

I recently bought an ol' hoopty truck and I knew there was a coolant leak somewhere since I could smell it every time I drove. No overheating or anything luckily. I picked some of this up and plopped it into the radiator, then drove it a couple times over the next few days. I also made sure to cycle the heat on to get it through the heater core. Was able to easily see all the leaks even in daylight with a little UV flashlight. Now that I know exactly what is bad, I'll be replacing the entire radiator soon instead of a bunch of hoses and other nonsense that's still good.

It worked for a P/S leak I was trying to find. But after I was done, the bottle cap leaks and makes a mess.

Great! Able to find leak with black light

It did a great job on my power steering pump finding the leak in daylight.

Not much more to say than it performs as it should. Obviously if you don’t have the equipment you need to actually utilize it’s benefits, then it’s pointless. However, this helped me in locating a leaky line on one of my vehicles. Cheaper than your local auto parts store too.