ASTM D3829 - Predicting the Borderline Pumping Temperature of Engine Oil
Significance and Use
5.1 Borderline pumping temperature is a measure of the lowest temperature at which an engine oil can be continuously and adequately supplied to the oil pump inlet of an automotive engine.
Scope
1.1 This test method covers the prediction of the borderline a 16 h cooling cycle over the temperature range from 0 °C to -40 °C. The precision is stated for temperatures from –34 °C to –15 °C.
1.2 Applicability to petroleum products other than engine oils has not been determined.
Extracted, with permission, from ASTM D3829-20a - Predicting the Borderline Pumping Temperature of Engine Oil, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the complete standard may be purchased from ASTM International, astm.org