Time for an update. I quit clean hypermiling at the end of April, after completing a 3664 mile round-trip to Texas with a non-hypermiler. We set the cruise control to 60 mph, but did no more. Sum total of my clean hypermiling was 6600 miles at 43.6 mpg, about a 6 mpg penalty for not shutting the engine off.
I haven't updated my mileage logs, but I'm averaging 50.1 mpg on my current 1300 mile trip to New Mexico, v. 41.1 mpg on the 3664 RT to Tx. 9 mpg for just P&G - I'll take it.
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Darrell
Boycotting Exxon since 1989, BP since 2010
Have you ever noticed that anybody driving slower than you is an idiot, and anyone going faster than you is a maniac? George Carlin
Mean Green Toaster Machine
49.5 mpg avg over 53,000 miles. 176% of '08 EPA
Best flat drive 94.5 mpg for 10.1 mi
Longest tank 1033 km (642 mi) on 10.56 gal = 60.8 mpg
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