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2004 to 2008 F-150 and Mark-LT
4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs.


 
 
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Old Fri, May 14th, 2010, 05:30 PM
JWBFX4 JWBFX4 is offline
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Quote:
Originally Posted by ticopowell View Post
Wow, I didnt think altitude would help mileage at all, and yeah hills suck... but the roads arent too twisty, but the speed limit is 45, and on base i dont dare go faster. What I still dont understand is why after cruising back and forth to denver(again 1000ish feet lower than colorado springs) I still get 13mpgs... I would think it would jump to at least 14-15 range, but it was about 13.1 every time i checked... and with the odometer I dont know how accurate it is, but the speedo is about 3 mph fast at 75, so 4%, so should I add 4% to my mileage to get an accurate reading to test mpg's?
The speedo comes from the factory, about 2 mph fast on these trucks. So I would say its probably correct.
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