Have the TB w/ Duramax and just had my 2nd oil change, 1st was comp from dealersip, yesterday I paid $94 with the tire rotation. My service guy is a buddy and had left before I picked up the truck and when I texted bitching he laughed and said you wanted the pretty truck with the fancy diesel engine, that is employee price, full price for the Duramax would be $174. That is outrageous, but made the $94 sound OK. Also, I had oil changed on my wife's Expedition at NTB (which was just bought by Mardis) and their oil change for long life oil went from $50 w/ rotation to $110, I had coupons and again a discount for being regular customer brought it to 84 for 7 quart oil change. The NTB guy said under the new management most oil changes went up at least 50% for labor and their bulk oil prices have increased a few times this year to almost $5/quart for synthetic blend, Full synthetic is much more. Just more of the supply chain $$ grab.