I did the first oil change on the 2.7. It was rather simple. Remove the under cover. I used an air ratchet .The drain plug is plastic that you turn 120 degrees, and then it pulls out The oil drained out quick and the drain plug is about an inch in diameter it could be less though. The filter is a cannister type which is easy to access it is on the top of the engine. The engine takes 6 quarts and it does take a while to show on the dip stick full mark. The trans is easy to check but a dip stick tube would be nicer but oh well. I changed the rear end oil and as expected it was ugly and only had about a quart in it the capacity is 5.5 pints . Both the engine oil and the gear oil was almost black as expected black with silvery swirls in it.