400 Commonwealth Drive, Warrendale, PA 15096-0001 U.S.A. Tel: (724) 776-4841 Fax: (724) 776-5760 SAE TECHNICAL PAPER SERIES and2000-01-1870 Anti-Shudder Property of Automatic Transmission Fluids - A Study by the International Lubricants Standardization and Approval Committee (ILSAC) ATF Subcommittee Yasuhiro Murakami Hideo Kurashina Nissan Motor Co., Ltd. Mitsubishi Motors Corporation James L. Linden and John E. Flaherty Mitsumasa Furumoto General Motors Corporation Honda R&D Co., Ltd. Joseph W. Sprys Shin-ichi Iwamoto Ford Motor Company Mazda Motor Corporation Tracy E. King Minoru Kagawa DaimlerChrysler Corporation Fuji Heavy Industry Co., Ltd. Fumio Ueda Toyota Motor Corporation International Spring Fuels & Lubricants Meeting & Exposition Paris, France June 19-22, 2000Downloaded from SAE International by Univ of California Berkeley, Saturday, August 04, 2018The appearance of this ISSN code at the bottom of this page indicates SAE’s consent that copies of the paper may be made for personal or internal use of specific clients. This consent is given on the condition,however, that the copier pay a $7.00 per article copy fee through the Copyright Clearance Center, Inc.Operations Center, 222 Rosewood Drive, Danvers, MA 01923 for copying beyond that permitted by Sec-tions 107 or 108 of the U.S. Copyright Law. This consent does not extend to other kinds of copying such ascopying for general distribution, for advertising or promotional purposes, for creating new collective works,or for resale. SAE routinely stocks printed papers for a period of three years following date of publication. Direct your orders to SAE Customer Sales and Satisfaction Department. Quantity reprint rates can be obtained from the Customer Sales and Satisfaction Department.To request permission to reprint a technical paper or permission to use copyrighted SAE publications in other works, contact the SAE Publications Group. No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior wr itten permission of the publisher. ISSN 0148-7191 Copyright © 2000 CEC and SAE International. Positions and opinions advanced in this paper are those of the author(s) and not necessarily those of SAE. The author is solely responsible for the content of the paper. A process is available by which discussions will be printed with the paper if it is p ublished in SAE Transactions. For permission to publish this paper in full or in part, contact the SAE Publications Group. Persons wishing to submit papers to be considered for presentation or publication through SAE should send the manuscript or a 3 00 word abstract of a proposed manuscript to: Secretary, Engineering Meetings Board, SAE. Printed in USAAll SAE papers, standards, and selected books are abstracted and indexed in theGlobal Mobility DatabaseDownloaded from SAE International by Univ of California Berkeley, Saturday, August 04, 20181 2000-01-1870 Anti-Shudder Property of Automatic Transmission Fluids - A Study by the International Lubricants Standardization and Approval Committee (ILSAC) ATF Subcommittee Yasuhiro Murakami Hideo Kurashina Nissan Motor Co., Ltd. Mitsubishi Motors Corporation James L. Linden and John E. Flaherty Mitsumasa Furumoto General Motors Corporation Honda R&D Co., Ltd. Joseph W. Sprys Shin-ichi Iwamoto Ford Motor Company Mazda Motor Corporation Tracy E. King Minoru Kagawa DaimlerChrysler Corporation Fuji Heavy Industry Co., Ltd. Fumio Ueda Toyota Motor Corporation Copyright © 2000 CEC and SAE International. ABSTRACT In recent years, the slip lock-up mechanism has been adopted widely, because of its fuel efficiency and itsability to improve NVH. This necessitates that theautomatic transmission fluid (ATF) used in automatictransmissions with slip lock-up clutches requires anti-shudder performance characteristics. The test methodsused to evaluate the anti-shudder performance of an ATFcan be classified roughly into two types. One is specifiedto