Quote:
Originally Posted by allan5oh
Yup I've been doing 58-60 for about 4 years now. I absolutely love it.
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Me too. I switched my tires to smaller diameter (low profile) to bring RPM up a bit so I can slow down and still have pulling power. I now almost always drive at 58 mph with CAT turning 1300. If I have a really heavy load and my route goes thru big hills, I increase the RPM to 1350 and then I'm doing 60 mph. I find 1300 to 1350 RPM is where my best fuel mileage is... 2004 CAT Acert C15, 500 hp at 1500 rpm, 1650 torque, 13 speed tranny, 3.73 rears, low profile tires (512 revs/mi).