C-12 or C-13

The C12's were single turbo vs series turbos on the C13's which offered improved response. We have a lot of loggers using C13's in Northern MN.

 

I haul almost 50k in a container with a mbl c12 pdi tune and turbo all around Minnesota. 3.55 rears and it pulls very very well. The pdi turbo is a bit laggy though and you have to shift around 1600 in the high range with a 10spd. It doesn't lug that well at all. Really really wish I had a 13 or 18 spd, it almost needs one.

In stock form it sucks to drive a tune is a must!

If I had to pull the 70k wood with my truck I wouldn't think twice. Just don't expect it to run 70 all day.

 

I worked at a farm and all the trucks had c12's in them and we would run 80k all day everyday. One of the trucks had a 13 speed and the other trucks had 10 speeds. We had a tender trailer for our sprayer and that had 2 3,000 gallon tanks and when they were both loaded full with 28% it would be around 120k and it seemed to pull it fine as long as you didnt mind winding it out before you shifted and didnt go over 55.

 

C-13 doesn't last longer the c-12 does.