Do you find oil drops on your garage floor but can't seem to find the leak? Here is a simple solution, put this dye in the oil then run the bike for awhile, after that use a black light to find the glowing dye as it leaks from the engine. This leak detector used by professionals is now available to the garage mechanic. Our 1 ounce bottle will be good for at least 4 tests. In addition to motorcycles, this kit can be used on other small engines including snowmobiles, lawnmowers and snow blowers.