"While it is possible Ford may extend oil change intervals from its current 7,500 miles after the expected introduction of GF-5 motor oil next fall, the increasing use of biofuels may put more pressure on motor oil, a factor that could contribute to intervals remaining static for the time being"
http://www.noln.net/inside_features/Two_automakers-X_0210.html?height=750&width=650
http://www.noln.net/inside_features/Two_automakers-X_0210.html?height=750&width=650
