i have never owned a diesel. im looking for used durmax i cant afford a new one. i need some help finding one. from what i been reading i think i want a 06 or newer i really want that 6 sp allison also. what do i need to look for? should i be scared to buy one with with 90k+ miles? i wont be towing all the time but my girl friend has a 30ft horse trailer with 2 horses.
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