Review on ACDelco 1148963 GM OEM 10-5045 Multi-Purpose Fluorescent Leak Detection Dye - 1 oz by Ryan Maruffo

I had a stubborn power steering leak and this black light method found the leak in no time. It was on the main wave! Wipe up the spilled liquid, refill, work for a while, look at the black light and voila, there's a leak. Expensive for 1 ounce. but I only used half as the power steering reservoir is quite small. An added bonus for me is that it's now easy to check the level in the pump with the black light!