Ford V-10 mods

In my X I run 5W20 in the winter and 5w30 in the summer. I ran 5W20 once while towing. The next day it rattles on start up for 3 seconds while pumping oil up into the motor. With 5W30 it never does this. Yes the tuner will work with the 5 speed, but you'll only gain power and a little bit of mileage with it. The real seller is the improved shift programming with the auto.

BTW, after I got rid of the stock Y-pipe I have no flutter that they talked about. I gained .5 mpg while towing with the tuner and Y-pipe.