I have made a few posts but am still a little confused. I also was reading "09 Chevrolet 5.3L switch to syn" and found some interesting remarks. I have a 09 Toyota Venza 3.5L V6. I currently have about 750 miles total on her now. I would like to know the best break in method for my car. I am still undecided on what oil to use. I am going synthetic, if nothing more for peace of mind. Should I do a 1000 mile change and switch over to synthetic? I'm prpbably going to go Mobil 1 but haven't rule out Pennzoil Platinum or even Royal purple. I find it interesting that people tell the author of the Chevy post he'll be fine with Mobil 1 but in their signature they are using PP or Royal purple ...something other than what the author is asking about. Why? If MObil 1 is the best, why not use mobil 1? If mobil 1 is NOT the best, why not recommend the "other" oil. OR are all synthetics the same if you do 5K mile changes?? I'm sure this one ot that one will have a slightly better report...but at the end of the day do they all protect your engine about the same?? Please advise what you think would be best for my Toyota. I'm not trying to start a feud but am trying to learn. I just want to know what would be best in my application.--VenzaTRD