INTERNATIONAL^ 400 COMMONWEALTH DRIVE, WARRENDALE, PA 15096-0001 U.S.A. Development of Automatic Transmission Fluids Having Excellent Low Temperature Viscometric and High Temperature Oxidative Properties Gordon D. S. Hamitton, Raymond Lanthier and Anthony D. Markin Petro-Canada Products Co. International Fuels and Lubricants Meeting and Exposition Tulsa, Oklahoma October 22-25, 1990 Downloaded from SAE International by University of New South Wales, Sunday, August 19, 2018The appearance of the 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 speclic clients. This consent is given on the condition, however, that the copier pay a $5.00 per article copy fee through the Copyright Clearance Center, Inc., Operations Center, 27 Congress St., Salem, MA 01 970for copying beyondthat permitted by Sections 107or 108ofthe U.S. Copyright Law. Thisconsent does not extend to other kinds of copying such as copying 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 Service Department. To obtain quantity reprint rates, permission to reprint a technical paper or permission to use copyrighted SAE publications in other works, contact the SAE Publications Group. - -- - - -- -.- - - . -. -- - - . -- -- -- - - - -- - - - -. -- - -- - - --. -- - --. - --- . - .= All S.4Ep.prrm -- .. = -- ehrhecl8dsndlnbexsdln - - --- = -- -I the SAE Gk4WHoLrMy Dot* -- -- --- . .---- --- . ------. - -- -- - ----- ----- -- - -- - .- -- -. -- -- -- .. -- - - No part of this publication may be reproduced in any form, in an electronic retrieval system or otherwise, without the prior writ- ten permission of the publisher. ISSN 01 48-7191 Copyrlght 1990 Society of Automotlve Engineers, Inc. Positions and opinions advanced in this paper are those of the Persons wishing to submit papers to be ansidered for presen- author(s) and not necessarily thoseof SAE. Theauthor issolely tation or publication through SAE should send the manuscript responsible for the content of the paper. A process is available or a 300 word abstract of a proposed manuscript to: Secretary, by which discussions will be printed with the paper if it is Engineering Activity Board, SAE. published in SAE Transactions. For permission to publish this paper in full or in part, contact the SAE Publications Division. Rhted in USA Downloaded from SAE International by University of New South Wales, Sunday, August 19, 2018Development of Automatic Transmission Fluids Having Excellent Low Temperature Viscometric and High Temperature Oxidative Properties Gordon D. S. Hamitton, Raymond Lanthier and Anthony D. Markin PetreCanada Products Co. ABSTRACT PERFORMANCE OF HYDROTREATED ATF The development of next generation automatic transmission fluids (ATFs) is described, in which HydroTreated basestock blends of 60, 80 and 160 Neutrals are compared with fully synthetic and partial-synthetic blends. New ATF formulations are described using both complete performance additive packages and various performance additive packages but with different Viscosity Index Improvers (VII). The VII component can be optimized to be synergistic with the unique properties of the basestocks to provide optimum performance. This work demonstrated that an all Hydro- Treated basestock blend can meet Original Equipment Manufacturers' proposed new low tem- perature Brookfield viscometric properties (20 000 cP max. @ -40°C) and provide excellent high temperature oxidation resistance. INTRODUCTION Petro-Canada uses a patented HydroTreating Process for the manufacture of lubricating oils in a high pressure (3000 psi), high temperature (up to 300°C) two-stage operation [I]*. We pro- duce a s