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Mack 12 speed transmission?

Posted by Farm Man , 17 September 2011 · 1,098 views

I am looking at a 87 superliner, camelback, 100k miles, with a 12 speed transmission. Would this be a good transmission for hauling grain on short trips (5 to 20 miles)? I had a friend say they can give some trouble. How reliable are they? We will prob. only put 4k miles a year on the truck. Thanks!




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Pauls Macks
Nov 19 2011 07:01 PM
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.
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Keith Lewis
Jan 29 2012 02:11 PM
a 12 speed mack tranny is a work horse,when its used correctly it can be a very enjoyable relationshiip,but if i were doing the super short stuff,id just find me an 5 spd
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Keith Lewis
Jan 29 2012 02:12 PM
bbelay my last,if the 12 speed dies then id put a 5 in,or the 2 stick 5 spd
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Tedcamp
Jun 07 2012 02:08 AM
Mack12 speed was the transmission of choice for Super B trains in the Canadian Rockies for many years, it will be a good transmission for your job.I takes a bit of getting used to but they were well built and I'd go with one every time. Ted Campbell

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