This whole thing gets better. I wanted to service my transmission as the car had almost 60k miles and it started to shift differently. The dealer's Service Department and the Owner's Manual says 100k for service. In the past I have always serviced (oil & filter) my auto trans vehicles at 40k to 50k. There is two different transmissions for this model and nobody could tell me which one I had. I bought both service kits and ended up taking the one I didn't use back to the parts store. I have one very big advantage over the average guy trying to take care of there car, I have a four post 7500 lb. lift in my garage. As someone who has always serviced my own vehicles and we usually have had three or four cars and only three slots in the garage I managed to convince my wife this was a must have, and she agreed. Changing the oil was a real treat on this Charger. The plastic "skid plate" is just time consuming is all, but no drain plug on the pan turned into a mess as you can imagine. Once the sump was off the transmission everything else was straight forward and no problems except when it came time to fill the transmission. Remember the two different listed transmissions, universal cable to measure oil level. The kit I used called for only four quarts of oil ? and the other required six quarts. I drained well over four quarts. Doing the refill I would start the engine after the four quarts and run it thru the gears and it didn't even show any oil on the cable. I kept adding oil until it showed full using five quarts. It shifts much better but it shudders on the 2-3 shift with less than 2000 rpm. Any higher rpm it work perfect. I love the car but I'm afraid I might not reach my usual 100k plus usage.