You might want to read this article first before considering Mobil 1. Apparently, it's not as good as the old stuff. I'm switching to Mobil 1 Delvac. At the Petro Lube truckstops, they only sell Mobil Delvac and Shell Rotella in synthetic and non-synthetic, if that tells ya anything. It's belived (rumors on the BMW sites) that the factory fill synthetic BMW uses is Mobil 1 Delvac, not Mobil 1, based on viscosity (5w40 vs. 0w40, color, etc.)

'86 4Runner: ARB winchbar, Kaymar, e-codes, OME lift, RR diff lock, FR truetrac, sound stream a/d/s audio, recaros.
'03 LX470: ARB sahara bar, Kaymar, HID's, ART cryo'd/slotted rotors, Stoptech SS hoses.
'01 Prelude SH
'00 CRV