First road trip in the 6.4 - Diesel Truck Forum -
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post #1 of 11 (permalink) Old 03-16-2007, 02:47 PM Thread Starter
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First road trip in the 6.4

Picked my ’08 up from Randy Wednesday afternoon and headed out on a road trip yesterday. It’s a SWB CC F350 3.73 auto. Love the new truck.

I drove 700 miles yesterday with most of it on interstate but there were two passes I went over. Mileage at 76MPH was 17.0 calculated and dropped to 15.2 when I was going into a 25MPH headwind for about 300 miles. 16.3MPG overall in some less than optimum conditions. Almost exactly what I got with an unmodified 6.0. I think if you are prudent with the throttle around town the mileage will be about the same as a 6.0. That said, it makes so much more power off idle (which uses fuel) that if you mash it like the 6.0 expecting lag the mileage will suffer. The dash computer was 1.5MPG optimistic. I started the trip with 32 miles on the truck. Maybe MPG will get better but who knows?

Some other reactions:

Everything in the cabin is better. The materials as well as fit and finish. Small things like the turn signal relay don’t sound so cheap and the controls have a better feel.

The transmission is better than ever. They’ve done a very good mapping to the 6.4. It never downshifted on a pass (empty) or hunted.

The front end is much more solid. There is no shudder on rough or rutted roads.

My first impression was that it was quiet and that impression holds. On a long drive I don’t miss the 7.3 with the big exhaust. The truck is pretty much passenger car quiet.

Whatever the ratings, the 6.4 has more usable power than the 6.0. On long grades that I’ve done many times, the 6.0 had to downshift to get some boost and the 6.4 stayed locked in 5th.

The audiophile upgrade is nice to have. It has a DSP feature that lets you profile it to the driver’s seat that gives you great sound at lower levels.

I think I noticed one re-gen cycle. It kicked the idle up to about 900RPM at a traffic light. It’s a non event. I don’t know why everybody is whining about it.

The sales experience with Randy was perfect. No surprises, no BS and good communication. Why can’t it always be this easy?

The truck has zero issues at delivery which hasn’t happened with me for a while. After a long day in it, my confidence that the truck will be solid is high. Because of the lag I always felt like the 6.0 (which I still like) was being pushed or taxed. This feels like some other diesels that seem to run easier which inspires some confidence.

Net, net, I’m happy I bought one and would encourage anyone on the fence to breath easier and give Randy a call.
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post #2 of 11 (permalink) Old 03-16-2007, 03:14 PM
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sounds good, thanks for the review and congrds on your new truck
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post #3 of 11 (permalink) Old 03-16-2007, 03:47 PM
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Thanks for the review, sounds like everything is good to go!

I have yet to hear even of hint of anything other then great customer service from customers from Randy.
post #4 of 11 (permalink) Old 03-16-2007, 04:15 PM
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Good deal!!! :Thumbup:
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post #5 of 11 (permalink) Old 03-16-2007, 05:02 PM
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Congrats on your new rig GT3 !!

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post #6 of 11 (permalink) Old 03-16-2007, 11:42 PM
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post #7 of 11 (permalink) Old 03-16-2007, 11:48 PM
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GT3 - Tom glad all went well with your trip. Thanks Again for your business. IF YOU NEED ANYTHING LET ME KNOW.


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post #8 of 11 (permalink) Old 03-17-2007, 04:13 PM
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The sales experience with Randy was perfect. No surprises, no BS and good communication. Why can’t it always be this easy?
Because many sales people feel that once you sign, their job is OVER. Unfortunately, at some Stealerships, the GM feels the very same way and the after sale support sucks.

From what I have read on TDG, Randy and company do not suffer from ANY of those problems. Maybe that is why they are so successful?

It's great to hear you like the truck. I don't believe the vehicle will go into regen while stopped in gear. In fact, I cannot imagine how that could work.

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post #9 of 11 (permalink) Old 03-17-2007, 05:47 PM Thread Starter
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Just got back from the return portion of the trip. Had a tailwind this time and and the calculated average from Salt Lake to Denver was 17.1MPG at 75MPH. I was 16.5MPG for the whole trip. That's +/- 1MPG vs. the 6.0 (same config.) I've driven the same route with many times. YMMV.
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post #10 of 11 (permalink) Old 03-18-2007, 05:12 AM
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Glad you are liking the truck..cant wait to see the pics. Its all about enjoying the ride man.

Go Greyhound, and leave your luggage with us. *maybe not intentionally*
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