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Posted by Russ Roth [67.150.122.119] on Sunday, March 07, 2010 at 01:08:42 :
In Reply to: Not always clear ? posted by Chriscase [76.212.162.152] on Saturday, March 06, 2010 at 14:51:09 :
Some of the class 8 trucks I have driven use the same motor oil in the PS as they do in the crankcase. Place I used to work had some that used both for a while but eventually switched them all to crank case oil. 15W40 Delo.