William Davidson Posted October 11, 2013 Share Posted October 11, 2013 I'm new here since I just purchased my first Mack. I have an '85 DM688s. When I got it home I noticed it doesn't have a power divider lock. Does Mack have some sort of automatic lockers or is this going to be helpless off road. I bought it to be a logging truck so traction is important. Quote Link to comment Share on other sites More sharing options...
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