10W-30 vs. 15W-40
Posted on April 08, 2015
Ryder has decided to migrate its heavy and medium duty commercial fleet to CJ-4 10W-30. This comes as many fleets are considering similar moves in hopes to gain fuel efficiency in the range of 1.5%.
http://viewer.zmags.com/publication/ccf4862b#/ccf4862b/23
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