I made the decision to start using Mobil 1 in my wife's 04 Concorde because of what I've learned on this site. This is the 2.7L V6 DOHC motor rated at 200hp.From what I've read this motor is tough on oil.Manual says 5W30 is preferred but 10W30 can be used above 0F. The oil selector at the Mobil site recomended 10W30 after I plugged in the data. I'm sure this is probably not an overly sophisticated program but it got me wondering if the 10W30 might be a better choice than the 5W30.It recomended 5W30 for my 96 Blazer and my Mom's 98 Buick which is what they call for. I've reviewed every UOA on here for Mobil 1 and also the data posted at the top of this page and it doesn't seem to me that there is a whole lot of difference between the 2 other than the 10W30 has A5/B5 in addition to the A1/B1 and a slight difference in the viscosity at 40C. Is there any advantage to using the 10W30 that I'm overlooking? I have enough b3g3 free coupons from Pep Boys to get me through this year and next. Already piked up a case of 5W30 SM/GF-4 and can barely restrain myself to wait until April 1 to put it in. Sorry this is so long.
Sorry, meant to post this in the general section. Moderator please move this and dish out appropriate verbal punishment.
[ February 25, 2005, 12:09 PM: Message edited by: farrarfan1 ]