Research Report RR:D02-1391
There are two laboratory tests available for the determination of High Temperature Deposits. The tests are the Thermo-Oxidation Engine Oil Simulation Test (TEOST) and the Hot Tube Test (HTT). This report describes three interlaboratory studies that were conducted to determine the precision of the methods. The first study is a preliminary (first) round robin held in February 1995, on the TEOST. Three reference oils were analyzed by seven participating laboratories. The second study is a full (second) round robin on the TEOST held in June 1995. Nine laboratories participated by analyzing seven reference oils. The third study in this report is a round robin on the HTT. The same seven reference oils used in the second TEOST round robin were analyzed by ten participating laboratories.
D6335-09 Standard Test Method for Determination of High Temperature Deposits by Thermo-Oxidation Engine Oil Simulation Test
Committee D02 on Petroleum Products, Liquid Fuels, and Lubricants
Subcommittee D02.09 on Oxidation of Lubricants