Quote:
Originally Posted by clapsrm
With my scanguage, 4.11 rear and 6.0 I have figured that around 62 mph is best speed and that is just about 2000rpm. I don't start getting "bad milage" until I am going over 69mph. While towing down to disney I was going about 68mph towing 6k and averaged about 11.8 mpg. Around town and commuting I get about 14.5mpg. I use either DieselKleen or 2 cycle oil and rotate usage.
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I think part of lies in where we both drove-trip 1 of mine was from Ct to Watkins glen NY up rt 17 (big hills) 2nd trip was to Burlington VT-again hills. Going to dizzyland I presume you went down rt95. I've yet to check mileage on flatlands. 90% of my trips will be up north. Think I'm just stuck with the laws of physics getting a 9k lb big box up long climbs.
