2006 387 MPG Results
#21
03-08-2011, 12:46 PM
Join Date: Jul 2010
Location: NW Indiana
Posts: 778
I was guessing at the cost....but 7.2mpg for 2700 miles is 375 gal @ $3.50 a gallon is $1,312...... 7.85mpg is 344 gallons for a total of $1,204, so roughly $100 a week to go 4-5mph faster for the whole trip. Now, going 67mph for 2700miles nets me 40.3hrs of non-stop driving (which nobody does LOL) and 62mph gets me 43.5hrs of driving. So for 3 more hours on the road, I'd make an extra $100. And with the price of stuff today, looks like it's gonna take me an extra 3hrs!
#22
03-08-2011, 02:02 PM
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#23
03-08-2011, 07:13 PM
Join Date: Jul 2010
Location: NW Indiana
Posts: 778
Yeah, I have the one under the bunk, then 2 in the back. One on each stack :c
What year is your truck? Maybe one is a regeneration system seeing the only trucks I know that have 2 under the cab are 07+ emissions motors. Is that it? Last edited by Steel Horse Cowboy; 03-08-2011 at 08:18 PM.
#24
03-13-2011, 09:40 PM
What engine/transmission/rear-end combo are you running in that truck? I'm somewhat surprised that you're getting better mileage at 62 than at 65. For me, it was the opposite... then again, that was a computerized governor, not the sole of my right boot doing the governing.
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"Yours?" As in you'd pop a cap in anyone's ass who dared step foot on your turf? (Rev. Vassago) "We have too many truckers making $35K a year and voting Republican because he thinks a Democrat is going to come confiscate his guns." (geargrinder) "I don't live in Duck's Ass. That's about an hours drive before you get to my house." (Malaki86)
#25
03-13-2011, 09:43 PM
Join Date: Jul 2010
Location: NW Indiana
Posts: 778
What engine/transmission/rear-end combo are you running in that truck? I'm somewhat surprised that you're getting better mileage at 62 than at 65. For me, it was the opposite... then again, that was a computerized governor, not the sole of my right boot doing the governing.
#26
03-13-2011, 09:48 PM
Join Date: Jul 2010
Location: NW Indiana
Posts: 778
well, this last week was a bust. I had STRONG headwinds for about 200+ miles of my trip to Texas. I wound up getting 6.75mpg going down set at 62mph.
My trip back home was the same headwind for 200+miles, then nothing. I fueled in MO and was at 7.25mpg set at 65mph. Looks like this is going to take some time, but I will admit, at 65mph (1325rpm) the engine seems to run smoother and pulls hills much easier. The truck is currently at peterbilt having the shift-tower busings replaced (stick is sloppy as could be) and having the overhead ran since I'm sure it has prob never been done, and at 517k miles, I figured it was a good time for it. I'll update next weekend if it has improved at all. I also am looking at going straights on the rear, and leaving the factory resionator/muffler underneath and seeing how that does, then might measure it up and see if I can get a high-flow replacement for it on down the road :smokin:
#27
03-14-2011, 02:59 AM
great thread, lots of good methodology and business thinking in here. Better than $30 an hour paid to you for 3 extra hours on the road...
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Lightblue Freightshaker :thumbsup: Ontario, Canada
#28
03-14-2011, 04:16 AM
Join Date: Jul 2010
Location: NW Indiana
Posts: 778
#30
03-20-2011, 01:27 AM
Join Date: Jul 2010
Location: NW Indiana
Posts: 778
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