It's not common that they go out so soon. Thats rare. Typically they should go to...150k plus mile I would think with no issues. Using the proper oil is critical in keeping ash/ soot content at the proper levels. Use a non certified oil for our trucks while you still have the DPF on and you'll have issues; it will gum it up really quick. So, either that happened to you or you got a bad apple right off the bat.