back in time I drove a white w/ 220 ***-mins for one 400 mile round trip.it just had no guts (I was used to a Mackw/5 speed maxidyne). By the 100 mile mark I could feel the power loss when I got to Albany to swap trailers with one carrying a beer load. Beer loads are hard pulling and heavy.Started homeOMG will I ever get bask with this peice of s*#t. I had called the home terminal tey said run it (shortage of mechanics to send a service truck) After 8hr. of stesdy driving to cover 150 miles I gave up&punched holes in the air filter to get home.I could only use granny and first gearby then. After slicing the air filter it ran good. My point is a dirty air filter will sneak up slow you down, waste fuel,and have no power. If you arent sure change it.