Spectronics Corporation”s OIL-GLO™ 40 is a versatile, oil-based, fluorescent leak detection dye that is formulated specifically for large industrial systems. The dye is designed to accurately pinpoint leaks in all synthetic- or petroleum-based fluid systems, including light-colored hydraulic fluid, very dark or intensely blue hydraulic and lubrication fluids, compressor oil, engine oil, and gearbox oil. OIL-GLO 40 contains more active ingredients per ounce than competitive dyes. Add the dye to any oil-based system and allow it to circulate for 5 to 10 minutes. Wherever there is a leak, the dye escapes with the system oil and remains at the site of the leak. Scan the system with a Spectroline® ultraviolet lamp and locate fluid leaks by its bright blue glow, which stands out from other leak detection dyes. OIL-GLO 40 can remain safely in the system for periodic re-checks — there’s no need to add more dye until the oil is changed.