Standard Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation in a Spark-Ignition Internal Combustion Engine Fueled with Gasoline and Operated Under Low-Temperature, Light-Duty Conditions

Importancia y uso:

5.1 This test method is used to evaluate an automotive engine oil's control of engine deposits under operating conditions deliberately selected to accelerate deposit formation. This test method was correlated with field service data, determined from side-by-side comparisons of two or more oils in police, taxi fleets, and delivery van services. The same field service oils were then used in developing the operating conditions of this test procedure.

FIG. 1 Schematic of Engine Fuel System

5.2 This test method, along with other test methods, defines the minimum performance level of the API Category SL (detailed information about this category is included in Specification D4485). This test method is also incorporated in automobile manufacturers' factory-fill specifications.

5.3 The basic engine used in this test method is representative of many that are in modern automobiles. This factor, along with the accelerated operating conditions, should be considered when interpreting test results.

Subcomité:

D02.B0.01

Referida por:

D8291-24, D4485-22E01, D8279-24, D6681-23, D6984-18E01, D7320-18E01

Volúmen:

05.03

Número ICS:

75.100 (Lubricants, industrial oils and related products)

Palabras clave:

lubricating oils; Sequence VG; sludge and varnish; spark-ignition automotive engine; stop-and-go service;