Spectroline Oil-Glo 44 blends two different fluorescent dyes — one fluoresces under ultraviolet light and the other under blue light so that it glows brightly under all types of inspection lamps. It pinpoints leaks in all oil-circulating systems. Dye escapes and remains at the site of all leaks. When the system is scanned with a high-intensity ultraviolet or blue light lamp, the dye glows bright yellow-green. It remains safely in the system until the oil is changed, so regular inspections will detect any future leaks before they can damage the equipment.

Spectronics Corp., (800) 274-8888, www.spectroline.com