Standard Test Methods for Detecting Glycol-Base Antifreeze in Used Lubricating Oils

Importancia y uso:

5.1 Leakage of glycol-base antifreeze into the crankcase is serious because the coolant tends to interfere with the lubricant and its ability to lubricate; it also promotes sludging. Ethylene glycol present in the coolant can increase varnish deposit formation in the crankcase as a result of glycol oxidation and the interaction between glycol and lubricant. Furthermore, because glycol is a higher boiling material than water, it will tend to stay longer in the crankcase oil than water. Lubricant displacement, sludging, and deposit formation all lead to engine malfunction and possible seizure.

5.2 These tests are designed to detect glycol-base coolant contamination even at low levels because early detection enables corrective measures to be taken to prevent leaking coolant from accumulating and seriously damaging the engine.

5.3 These test methods are also significant because the reagents can be packaged as a field kit, and the procedure can be followed at the site where there is a concern.

Subcomité:

D02.06

Referida por:

D4291-21, D4291-21, D6224-23, D4291-21, B0999-15R22

Volúmen:

05.01

Número ICS:

71.100.45 (Refrigerants and antifreezes), 75.100 (Lubricants, industrial oils and related products)

Palabras clave:

glycol-base antifreeze; glycol-base coolant; used lubricating oil;