This test method covers the evaluation of the leakage tendencies of wheel bearing greases when tested under prescribed laboratory conditions.

This test method is being balloted for withdrawal with no replacement because it is not actively supported within Subcommittee D02.G0 (it has only been reapproved with editorial changes since 1994). Subcommittee D02.G0 also considers that this Test Method D1263 was superseded by Test Method D4290 on Leakage Tendencies of Automotive Wheel Bearing Greases Under Accelerated Conditions.

Formally under the jurisdiction of Committee D02 on Petroleum Products and Lubricants, this test method was withdrawn in May 2010.

The test method provides a screening device that permits differentiation among products having distinctly different leakage characteristics (Note 1). It is not the equivalent of longtime service tests, nor is it intended to distinguish between wheel bearing greases showing similar or borderline leakage.

Note 1—It is possible for skilled operators to observe significant changes in other important grease characteristics that occurred during the test. Such additional information can be of special interest to individual operators. The observations, however, are subject to differences in personal judgment among operators, and cannot be used effectively for quantitative rating.

1.1 This test method covers the evaluation of the leakage tendencies of wheel bearing greases when tested under prescribed laboratory conditions.

1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.3 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. For specific hazard information see 8 and Annex A2.