Gm Global Technolgoy Operations, Inc.

Afton Chemical Corporation

Michael B Glasgow

Anthony J Rollin

Samuel Harry Tersigni

Roy Fewkes

Joan M Petit

Anthony Joseph Rollin

An additive composition including at least one dispersant viscosity index improver and at least two seal swell additives is disclosed.

Additive composition

A test apparatus for testing fluid seals within an aerated fluid includes a container and a fluid located within the container. A plurality of seal coupons are submerged within the fluid in the container. An air supply is connected to the container to aerate the fluid within the container. Testing the seal coupons includes flowing air from the air supply through the fluid to contact the seal coupons. After the air has contacted the seal coupons then the plurality of seal coupons are removed from the fluid. A value for at least one characteristic of the seal coupons is then compared with a standard value.

Apparatus and method for a seal immersion test with aerated fluid

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Williamsburg, VA, United States of America

Michael B Glasgow