3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

MPG and shifting a NV5600

Old Sep 29, 2005 | 11:05 AM
  #1  
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MPG and shifting a NV5600

I only use 1st gear while towing, If I use it all the time would fuel mileage increase?
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Old Sep 29, 2005 | 11:09 AM
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From: SW PA
very seriously doubt it, 1st is a waste of time & energy unless you're pulling something. I've noticed mpg gains by shifting up early, keeping rpm's below 1800 really helps
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Old Sep 29, 2005 | 04:45 PM
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From: Cummins Technical Center, IN
If you launch in second in such a way to where you have to give it some skinny pedal to launch, then 1st gear will save you some fuel. If you slip your clutch more, it won't save any fuel.

I launch in 1st to help the clutch. Shift around 1700-1800 rpm for best mpg, and be eeeeeeasy on the pedal.
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Old Sep 29, 2005 | 05:53 PM
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1st gear is going to get me rear-ended. I move 5 feet in a hurry and then take a few seconds to grab the other gears before I can get through an intersection.

1st gear
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Old Sep 30, 2005 | 06:14 AM
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Originally Posted by DSLRammin
1st gear is going to get me rear-ended. I move 5 feet in a hurry and then take a few seconds to grab the other gears before I can get through an intersection.

1st gear
Correct. I'd lose 1st (and I always tow) for another gear at the other end
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Old Sep 30, 2005 | 07:11 AM
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To conserve fuel I shift below or at 2k rpms. Since doing the Rokktech timing mod I can be in 6th gear by 30-35mph and still accelerate easily from there.

MikeyB
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Old Sep 30, 2005 | 01:21 PM
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I start in second unless towing, shift @2000 and try to keep my rpms between 1500-2000 when cruising to keep from lugging it.
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Old Sep 30, 2005 | 07:31 PM
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From: Niagara Falls Canada
I love the zero throtle launch in 1st gear towing ,
always 2nd solo, shifting around 2000rpm, best solo mileage 18.8mpg, towing mileage 12-13 average.
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Old Oct 3, 2005 | 09:52 PM
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i always use 1st i never did on my 99 but i do on this one and i shift at 1400rpm through 22k my avg is just under 22 mpg
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Old Oct 3, 2005 | 10:26 PM
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i can launch in second gear with no throttle. You want to doe something fun pull up to the parking stops or a good curb. Put it in first and ease up to the curb. Start letting out on the clutch without pushing the throttle slowly until the tires start spinning. It was easier with the stock michelins.
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Old Oct 3, 2005 | 11:08 PM
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From: San Juan Bautista
When Im empty I idle of in 3 gear unless Im on a hill..
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Old Oct 4, 2005 | 02:26 PM
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Originally Posted by rammtuff
Correct. I'd lose 1st (and I always tow) for another gear at the other end
I agree. I also tow 10k+ alot.
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