Browse Publications Technical Papers 710139
1971-02-01

Pumpability of Multigrade Engine Oils at Low Temperature 710139

The low-temperature pumpability performance of multigrade engine oils was evaluated in several United States and European engines. Test oils included both experimental formulations and commercial service station oils; test temperatures ranged between -20 and 0 F.
The time for oil to reach engine rocker arms after startup at -15 F and -20 F was not related to low-temperature lubricant properties such as pour point and Brookfield viscosity. Pumpability (that is, oil gallery pressurization rate) of the oils improved markedly in successive cold-temperature starts, probably because of fuel dilution and shearing of microstructures in the oil. Engine design features can significantly affect pumpability performance.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 16% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Factors Affecting the Low Temperature Pumpability of Used Engine Oils

872049

View Details

TECHNICAL PAPER

Development of the ASTM Sequence IIIE Engine Oil Oxidation and Wear Test

881576

View Details

TECHNICAL PAPER

Newtonian Multigrade Gear Lubricants: Formulation and Performance Testing

821180

View Details

X