8oz Oil-Based Dye LeakFinder offers dyes for oil-based fluids (LF2001/LF2008), addressing systems containing oil, fuel, transmission fluid, power steering fluid, and more. . The dye fluoresces a yellow/green color and is compatible with all leak detection flashlights (blue light, violet light, and ultraviolet light).. Finds leaks in Oil, Fuel, ATF, and Power Steering Systems. 1 oz (30 ml) Bottle (Services 1 Vehicle). 8 oz (237 ml) Bottle (Services up to 8 Vehicles). Fluoresces Yellow/Green. Works with All Leak Detection Flashlights LF2008