I dont see how some people can't believe that. My buddies uncle bought a 02 7.3 recently and on a trip up from south carolina his lie o meter said 21.4 he crunched the numbers and he was actually getting around 22. Its highly believable. I have a 02 on 38 with 3.73's and at 65 I get 19.5 so 25 at 60 is very believable.