A Comparison of Accelerated Coolant Aging Laboratory Tests and Field Test Results

1999-01-0131

03/01/1999

Event
International Congress & Exposition
Authors Abstract
Content
A test method that will age coolants in a manner representative of coolant aging in the field is vital to the development of coolants that meet expected performance criteria. In an attempt to develop such a test, two approaches were taken. A phosphate buffered, molybdate/nitrite containing, propylene glycol based, heavy-duty coolant was aged in the laboratory using both a flow stand and a reflux apparatus. Samples of the coolant were taken at various time intervals during both tests. The samples were analyzed to determine glycol degradation product, sulfate and corrosion product accumulation, additive depletion, and pH changes. The results were compared to actual field results for the same coolant to determine which of the two approaches best simulated coolant degradation in the field. The flow stand appeared to best simulate actual field results.
Meta TagsDetails
DOI
https://doi.org/10.4271/1999-01-0131
Pages
7
Citation
Martin, H., Cox, B., Hudgens, R., and Bessee, G., "A Comparison of Accelerated Coolant Aging Laboratory Tests and Field Test Results," SAE Technical Paper 1999-01-0131, 1999, https://doi.org/10.4271/1999-01-0131.
Additional Details
Publisher
Published
Mar 1, 1999
Product Code
1999-01-0131
Content Type
Technical Paper
Language
English