Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence VIII Spark-Ignition Engine (CLR Oil Test Engine)
|Publication Date:||10 August 2001|
|ICS Code (Lubricants, industrial oils and related products):||75.100|
This test method is used to evaluate automotive engine oils (SAE
grades 5W, 10W, 20, 30, 40,
and 50, and multivis-cosity grades) intended for use in spark-ignition
gasoline engines. The test
procedure is conducted using a carbureted, spark-ignition Cooperative
Lubrication Research (CLR)
Oil Test Engine (also referred to as the Sequence VIII test engine in
this test method) run on
unleaded fuel. An oil is evaluated for its ability to protect the
engine and the oil from
deterioration under high-temperature and severe service conditions.
The test method can also be
used to evaluate the viscosity stability of multiviscosity-grade
Correlation of test results with those obtained in automotive
service has not been established.
Furthermore, the results obtained in this test are not necessarily
indicative of results that will
be obtained in a full-scale automotive spark-ignition or
The values stated in SI units are to be regarded as standard, except for (1) volume which is given in the metric, but non-SI, litre, (2) certain tube measurements which are given in the inch-pound unit, (3) cylinder bore and stroke in both SI and inch-pound units (the inch-pound being the standard) and (4) piston displacement given in metric (non-SI) and inch-pound unit (the inch-pound being the standard). In respect to (3) and (4) the inch-pound units are shown first and the SI units in parenthesis.
This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are provided throughout this test method.
This test method is arranged as follows: