Oregon to Minnesota via WA, ID, MT, SD then up into MN , I do this as a round trip 3x a year. Then there is Portland to Ca then continuing to Arizona and back, also 3x a year. Trips are usually at 70-75 mph and 80 in select areas. Since march , my mi/kw is 3.7 , I’m going to TRY to hold it to 65...