I can't believe that place said it was difficult to change the oil. All you do is take off the plastic belly pan, take off the bolt, drain the oil, replace filter, put the bolt back on, replace with 8 qts of oil and you're done. I do it with ease in my garage. I no longer use the plastic belly pan, this way I can change the oil without having to jack up the car . Piece of cake. And the only oils I've ever used has been Mobil 1 0w-40, Castrol Edge 5w40 and Amsoil 5w40.