Standard Test Method for Evaluation of the Thermal and Oxidative Stability of Lubricating Oils Used for Manual Transmissions and Final Drive Axles

Importancia y uso:

5.1 This test method measures the tendency of automotive manual transmission and final drive lubricants to deteriorate under high-temperature conditions, resulting in thick oil, sludge, carbon and varnish deposits, and the formation of corrosive products. This deterioration can lead to serious equipment performance problems, including, in particular, seal failures due to deposit formation at the shaft-seal interface. This test method is used to screen lubricants for problematic additives and base oils with regard to these tendencies.

5.2 This test method is used or referred to in the following documents:

5.2.1 American Petroleum Institute (API) Publication 1560-Lubricant Service Designations for Automotive Manual Transmissions, Manual Transaxles, and Axles,7

5.2.2 STP-512A–Laboratory Performance Tests for Automotive Gear Lubricants Intended for API GL-5 Service,8

5.2.3 SAE J308-Information Report on Axle and Manual Transmission Lubricants,9 and

5.2.4 U.S. Military Specification MIL-L-2105D.

Subcomité:

D02.B0.03

Referida por:

D5760-19, D5662-23, D7450-24

Volúmen:

05.02

Número ICS:

75.100 (Lubricants, industrial oils and related products)

Palabras clave:

carbon and varnish deposits; final drive axle; gear cleanliness; gears; insoluble; L-60; lubricants; manual transmission; oil thickening; seal failure; sludge; thermal oxidation;