A second vote for ONB in everett. I do not have a diesel (rats!) but they have done work on my ford and are ford specialists. They were very accomidating with my schedule and very honest about the work needed. All in all pretty good guys (for mechanics)! :p . they also do pre purchase inspections for used car buyers for a pretty reasonable price, around 30 to 50 bucks depending on the rig.
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bawddawg, no biscuit!