oldpops
Well-known member
Hello! Does anyone here know what florescent UV engine oil dye I can use that isn't the same yellow/green color used in the cooling system? I already put some of that(yellow/green) in the coolant to check for any leaks and I want to do the same in the engine oil. I know there are leak detection kits that have at least 4 different color florescent UV dyes for the different automotive fluids, but I can't afford a kit. A (very old) neighbor, who is a long retired mechanic, said he knows there are UV dye colors like blue, red, & white, but he can't remember much more than that . I asked the girl who answered the phone at the local auto-zone about engine oil UV dye's and she said she didn't know of any color but the yellow/green. Thought i would ask here.