Does what it promises
Reviewed By Fred A (BURLINGTON, KY) Reviewed for a 2009 Ford F-350 —1/30/2015 12:28 PM
Installed it today and went out for a test drive. Running a 2009 F350 Diesel and averaged 12.0 MPG before and now in less than 100 miles highway I am showing it running at 14.0 MPG. Can't wait to take it on longer trips.