I got my 2005 Pacifica last February 2006. It had 52000km and now its got 57000Km. I need to change the oil. I hate havint other people working on my vehicule I got screwed so many times by different garages that I like to do my oil changes myself and other little thinks like change the plugs and air filter. But this is my first real luxury Van/SUV. I had chevrolet Z24 cavalier and toyota corolla doing those things were easy because they were small cars. I already been told not to put K&N filter in a Pacifica because of the increase of air flow it might trigger the engine light for different reason. I been reading the forum about the platinum plugs I guess I will put original plugs just to be safe. So I can see that the Pacifica is a lot more complex then my previous cars. So I will not play around with it by putting higher end parts. Even my oil Im scare to go to synthetic. I didnt have any issues yet it run perfect. I will have to bring it to the dealer for the transmition fluid but I will be standing next to the car while the mechanic will be doing it. I do have a question I have extended warranty if I change the oil myself and keep the receipts that shouldnt affect my warranty correct?