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Old 04-26-2013, 09:06 PM   #14 (permalink)
bestclimb
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Join Date: Oct 2009
Location: South Central AK
Posts: 933

escort - '99 ford escort sport
90 day: 42.38 mpg (US)

scoobaru - '02 Subaru Forester s
90 day: 28.65 mpg (US)
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Quote:
Originally Posted by sheepdog 44 View Post
2 / (1 / 15) + (1 / 150) =27.27mpg < 27-30mpg. You always have to climb up the same hill you went down, and Ideally, your average can only be double the mpg you had while going up the hill.

If your going to drive with load, your going to be varying your speed considerably. And if your going to coast down hill, well, your now your just doing P&G. And P&G on a level road will always get you better mpg than a steady cruise, with the exception of leanburn.
Oops, bad math on my part. I still like hills because a hill that is 15 mpg up and 150 mpg down describes a worst case scenario hill. As you show it is still better than the lower end of flat ground cruising. If a hill is steep enough to be 15mpg the way back down will keep me over 65 (at .26gph idle or on DFCO)
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