What is the correct procedure to switch between regular and prenium fuel on the 5.0l? Can you switch as you wish or you got to let the tank empty and then make the switch?
Sent from my SGH-I747M using Mustang Evolution mobile app
If the car only requires 87 and you are not tuned for higher, switch and mix however you please. It really doesn't matter what percentage of anything you have in your tank. You just don't want to put less than the minimum octane required in your tank.
2012 Grabber Blue V6 Convertible
1995 Red Trans Am Convertible
1979 Gold Trans Am
The Coyote can naturally adjust for the change in octane, it bumps and retards the timing as necessary. So the 420 claimed horsepower is on premium fuel (93) octane, so you lose a tiny bit of power going 87, but its perfectly fine... And since it can tell what the overall octane level of the tank is you can switch as needed.
Faster than a speeding...............
2001 Bullitt being prepped for track duty
Corners > Straight line