Brief PMS299 D

Application Note

Determination of Ethylene Glycol in Used Engine Oil by Headspace-Gas Chromatography



The presence of ethylene glycol in used motor oil is an indication of antifreeze coolant leakage into the crankcase of an internal combustion engine, thus predicting engine-wear problems. A practical method has been developed and tested which will allow for high throughput testing of ethylene glycol as a diluent in used motor oil. Up to 400 samples per day can be analyzed using this method, which provides results directly comparable to established methods.