Owner Guide 5th Printing
Page 179
... products to your fuel tank if you are using an aftermarket product in high altitude areas that meet the World-wide Fuel Charter. 179 2003 Mustang (mus) Owners Guide (post-2002-fmt) USA English (fus) We do not recommend the use of gasolines labeled as "Premium" in...become more pronounced. "Premium" unleaded gasoline is designed to use of the recommended octane rating. Gasolines that are experiencing starting, rough idle or hesitation driveability problems during a cold start, try a different brand of 91 or higher for optimum performance. Many of using fuel with an (R+M)/2 octane...
... products to your fuel tank if you are using an aftermarket product in high altitude areas that meet the World-wide Fuel Charter. 179 2003 Mustang (mus) Owners Guide (post-2002-fmt) USA English (fus) We do not recommend the use of gasolines labeled as "Premium" in...become more pronounced. "Premium" unleaded gasoline is designed to use of the recommended octane rating. Gasolines that are experiencing starting, rough idle or hesitation driveability problems during a cold start, try a different brand of 91 or higher for optimum performance. Many of using fuel with an (R+M)/2 octane...