Most engine oils do not have pumpability problems unless used below the engine manufacturers' recommended operating temperatures. An orifice viscometer has been developed which shows promise of identifying the exceptions, those few oils which could have pumpability problems at temperatures above the recommended temperatures. If more extensive testing confirms the initial promise of this method, inclusion of orifice viscometer limits in engine oil specifications would provide consumer protection. The orifice viscometer shows that some oils can be more fluid at a low temperature than at a higher temperature.Most engine oils do not have pumpability problems unless used below the engine manufacturers' recommended operating temperatures. An orifice viscometer has been developed which shows promise of identifying the exceptions, those few oils which could have pumpability problems at temperatures above the recommended temperatures. If more extensive testing confirms the initial promise of this method, inclusion of orifice viscometer limits in engine oil specifications would provide consumer protection. The orifice viscometer shows that some oils can be more fluid at a low temperature than at a higher temperature.Most engine oils do not have pumpability problems unless used below the engine manufacturers' recommended operating temperatures. An orifice viscometer has been developed which shows promise of identifying the exceptions, those few oils which could have pumpability problems at temperatures above the recommended temperatures. If more extensive testing confirms the initial promise of this method, inclusion of orifice viscometer limits in engine oil specifications would provide consumer protection. The orifice viscometer shows that some oils can be more fluid at a low temperature than at a higher temperature.Most engine oils do not have pumpability problems unless used below the engine manufacturers' recommended operating temperatures. An orifice viscometer has been developed which shows promise of identifying the exceptions, those few oils which could have pumpability problems at temperatures above the recommended temperatures. If more extensive testing confirms the initial promise of this method, inclusion of orifice viscometer limits in engine oil specifications would provide consumer protection. The orifice viscometer shows that some oils can be more fluid at a low temperature than at a higher temperature.
Viscometer for Predicting Low-Temperature Pumpability of Engine Oils
Sae Technical Papers
1977 SAE International Fall Fuels and Lubricants Meeting and Exhibition ; 1977
1977-02-01
Conference paper
English
Viscometer for Predicting Low-Temperature Pumpability of Engine Oils
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