STARTING ability of engines is improved when 5W oil replaces 10W oil at low temperatures, according to the author. In fact, he reports that the average increase in cranking speed is 33%, in comparable engines under similar conditions.At the same time, he shows, there is only a moderate increase in oil consumption and no significant increase in wear with the 5W oils.
LIGHT ENGINE OILS for Improved Subzero Operation
Sae Technical Papers
Pre-1964 SAE Technical Papers ; 1906
1950-01-01
Conference paper
English
SUBZERO AUTOMOTIVE CRANKCASE OILS
SAE Technical Papers | 1948
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Improved fuel economy via engine oils
Automotive engineering | 1978
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