w350 mpg's
#5
Chico, wire up a ground wire through a switch to the negative side of the solenoid for OD and you can flip the switch on anytime you want OD. As for the mpgs, mine is getting 15+ with a trailer behind it going 70 mph. Slower would probably yield better mpgs. I'm also running PODs so that cuts down some too. They haze pretty well at idle.