OIL TEST KIT OIL KIT NO 5 Oil Test Kit No. 5 for onsite analysis of water-in-oil, base number, viscosity, insolubles, and salt, formulated & engineered in the USA. Read More OIL KIT NO 3 Oil Test Kit No. 3 for onsite testing of water-in-oil, base number, and viscosity, formulated & engineered in the USA. Read More BN REAGENT BN reagent for determining base number in engine oils, essential for monitoring oil additive reserve, formulated & engineered in the USA. Read More WIO REAGENT SET Organic water-in-oil reagent set for precise detection of water content in oil, formulated & engineered in the USA. Read More CLEANER SOLUTION Organic WiO Reagent, formulated & engineered in the USA. Read More