The 948 mL bottle of Spectroline OIL-GLO ULTRA yellow/green suits workshops, hydraulic service providers and sites that dose several machines or large reservoirs. It is the same dye as the 473 mL bottle in a larger twin-neck pack, which lets you measure each dose without a separate jug.

Yellow/green is the most versatile dye in the range. It glows brightly under both UV (365 nm) and violet (400 nm) lamps, and it is the only oil dye in the range also rated for petrol and diesel fuel systems. Use it in mineral or synthetic hydraulic fluids, compressor oils, engine oils and gearbox oils.

One 948 mL bottle treats around 950 L of light hydraulic oil, with higher dose rates for darker oils, engine and gear oils. Full dose rates are on the TDS.

Filtered to 2 microns, co-solvent free and NSF registered. A UV or violet leak detection lamp and matching safety glasses are required.