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Old 05-07-2016, 07:30 PM   #22 (permalink)
slowmover
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Join Date: Oct 2009
Location: Fort Worth, Texas
Posts: 2,442

2004 CTD - '04 DODGE RAM 2500 SLT
Team Cummins
90 day: 19.36 mpg (US)
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Sorry I missed this before now. Too many hours and days on the road. Will be looking to see how it works out. And the spell checker cracks me up.

As to BSFC map,'check Diesel Daves comments. Nearly any automotive diesel is close for GP work. The VW TDI, for instance. The rest is more intuitive, granted, but there is room to mess around at or barely above 60-mph in terms of gearing.

Above 65 (which doesn't save time) the increased wear on tires and the decrease in braking/handling safety closes the door to that.

My impression after nine years is that the truck is set to do its best work from 55-65/mph (on my third gen). Really, 58-63 with my gears and trans ratios. This is where to look.

Last edited by slowmover; 05-07-2016 at 07:36 PM..
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