Well I just bought a 07 G6 GT with 170k on it. I paid 3k for it from what I can tell it seems like a solid car. I plan on doing what most people do when they buy a used car and that's replace every fluid in it. Or it could be I am just anal like that. What brands of oils and such do you guys like the most. I have always been a royal purple type of guy but I know certain engines like oils. Also what type of spark plugs should I get. Thanks
Thanks for all of the input. I am kind of hoping that the 3.5 is a good engine. I have a Sierra with the 5.3 in it and it has 234k on the clock and still runs great I have always had good luck with GM engines.