-
Posts
6 -
Joined
-
Last visited
BigMackTrucks.com is a support forum for antique, classic and modern Mack Trucks! The forum is owned and maintained by Watt's Truck Center, Inc. an independent, full service Mack dealer. The forums are not affiliated with Mack Trucks, Inc.
Thank you for your support!
Mack 12 speed transmission?
in Farm Man's Blog
A blog by sritchhart in General
Posted
The mack 12 speed is a great transmission if you can shift it , its not for the laidback driver ,I've had a couple and no trouble. You do have to make sure the air pressure is ajusted to the right pressure, that makes them shift the best.