SYMPOSIA PAPER Published: 01 January 1993

Fleet Test Evaluation of Engine Coolants Using Sebacic Acid Inhibitor Technology


A three-year, twelve-car municipal fleet test was conducted to compare the relative merits of an extended life sebacic acid coolant and current high silicate alkaline phosphate coolant used in North America. The test was conducted under rigidly controlled conditions in accordance with ASTM Practice for Testing Engine Coolants in Car and Light Truck Service (D 2847).

This paper will show the (1) depletion rates for chemical inhibitors used in the coolants and (2) actual photographs of cooling system component parts removed from the vehicles at the termination of this test.

Author Information

Adamowicz, NC
Ford Motor Company, Dearborn, MI
Falla, DF
Dow Chemical Canada, Inc., Sarnia, Ontario, Canada
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Developed by Committee: D15
Pages: 63–81
DOI: 10.1520/STP25157S
ISBN-EB: 978-0-8031-5244-1
ISBN-13: 978-0-8031-1851-5