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View Poll Results: What Hwy Mileage does your 4X4 get in US MPGs?
10, 11 0 0%
12, 13 2 2.56%
14, 15 9 11.54%
16, 17 44 56.41%
18, 19 15 19.23%
20 + 8 10.26%
Voters: 78. You may not vote on this poll | Withdraw Vote

 
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Old 07-23-2019, 04:32 AM   #31
Vanzer Pagen
 
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Default Re: What Hwy Mileage does your 4X4 get?

Just came down the 395 with cruise control set at 65mph (68 actual speed with big tires) and a 35mph (avg, I think) headwind. Onboard dash said 16.8, gps and gallon count came to 16.7.
Don't know if that was before or after the solar panels blew off. So much for saving money by owning a diesel and camping :(
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Old 07-23-2019, 05:35 AM   #32
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Default Re: What Hwy Mileage does your 4X4 get?

Quote:
Originally Posted by Vanzer Pagen View Post
Just came down the 395 with cruise control set at 65mph (68 actual speed with big tires) and a 35mph (avg, I think) headwind. Onboard dash said 16.8, gps and gallon count came to 16.7.
Don't know if that was before or after the solar panels blew off. So much for saving money by owning a diesel and camping :(
Sorry to hear it. Any wisdom to be shared on how this may have happened? How were they mounted?
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Old 07-23-2019, 04:01 PM   #33
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Default Re: What Hwy Mileage does your 4X4 get?

Quote:
Originally Posted by Vanzer Pagen View Post
Just came down the 395 with cruise control set at 65mph (68 actual speed with big tires) and a 35mph (avg, I think) headwind. Onboard dash said 16.8, gps and gallon count came to 16.7.
Don't know if that was before or after the solar panels blew off. So much for saving money by owning a diesel and camping :(


My brother-in-law lost his solar panels In Yosemite Park. Unfortunately the car following behind was damaged slightly. I believe he had used a combination of VHB tape and sheet metal screws.


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Old 07-24-2019, 10:39 PM   #34
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Default Re: What Hwy Mileage does your 4X4 get?

Returned from a grandparents mid-west tour last week (with a short trip to Paris without the kids thrown in!) - about 2500mi (of driving).

GPS speed of 75-77 across eastern CO and Nebraska saw ~16.4mpg
From Des Moines to central WI on secondary roads (more interesting anyway), speeds 55-62mph saw 19.0mpg
Central WI to Duluth, then west on more 2 lane hwy, speeds again in the 55-62mph range saw 18.5mpg
Then we pushed a headwind across N Dakota at 75-77mph that yielded ~14.5mpg

I calculate all MPG via miles traveled and actual fuel refilled.


I don't like interstates for a lot of reasons, but they are necessary sometimes. 55-60mph is more comfortable and gives way better fuel economy (duh).

The van is great for road trips!
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Old 07-25-2019, 04:40 PM   #35
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Default Re: What Hwy Mileage does your 4X4 get?

I am surprised to see that I get 22 mpg when I am in 4x4 low crawling down my hill, but about 20 on the highway going 55-60. All my other cars were the opposite — **** on the dirt and great on the highway.
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Old 07-26-2019, 03:33 PM   #36
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Default Re: What Hwy Mileage does your 4X4 get?

Quote:
Originally Posted by Vanzer Pagen View Post
Just came down the 395 with cruise control set at 65mph (68 actual speed with big tires) and a 35mph (avg, I think) headwind. Onboard dash said 16.8, gps and gallon count came to 16.7.
Don't know if that was before or after the solar panels blew off. So much for saving money by owning a diesel and camping :(
Dude! That makes me nervous, I dont remember exactly how you mounted your panels but I remember thinking you did a better job of it than I did. Hit me up and let me know how the projects are going, havent heard from you in a while.
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Old 07-26-2019, 04:41 PM   #37
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Dude! That makes me nervous, I dont remember exactly how you mounted your panels but I remember thinking you did a better job of it than I did. Hit me up and let me know how the projects are going, havent heard from you in a while.
Not meaning to hijack this thread, but I'll share my solar panel loss details as quickly as possible:
I chose to use 2 Renogy Eclipse 100 watt panels, and their plastic "drill free" mounts (I thought they looked good) which are molded plastic corners (4) and mid pieces (2)
https://www.renogy.com/renogy-corner-bracket-mount/
I called the company tech line and was told to use a Sika-Flex product to glue them to my top and to glue the panels in. Proper prep was done to all surfaces (sanding, cleaning, etc) as well letting the adhesive cure for about 3 days.
First incident was one of the mid sections let go about a year ago while driving on a freeway. We heard and noise but didn't give a thought, then noticed the mount missing when I got home. It was obvious that the adhesive had let go of the plastic mount. Called Renogy only to be told they would not replace the single piece but I could purchase a set and they would not cover anything done DIY regardless of the fact they recommended the adhesive. And was also told that drilling any holes in the panels will void any warranty as well...
So I pulled off the entire unit, married the panels together with an alloy plate USING THEIR HOLES, drilled and tapped the plastic mounts for 1/4-20 grub screws, re-mounted everything using silicone for adhesive on the mount to fiberglass pop-top surface, and thought I was good to go. What I neglected to do was replace the adhesive between the mounts and panels, thinking the grub screws would do the work. Silly me...

Ran into quite a windstorm last week coming down the 395 Eastern Sierra Hwy. Again, heard a noise, thought something fell out of a interior cabinet and kept rolling. Got to a fuel station and saw jut the wires dangling from the top :( When I got home I climbed up and saw that there was no adhesive on the plastic mounts, and apparently the grub screws couldn't grub enough. Re-ordered new Eclipse panels through Amazon (cheaper than Renogy) because they are a decent value. Tackling the re-mount over the weekend and will post a sepearte thread on that with pics.
But for now bottom lines are:
a) Renogy customer service truly does suck
b) Sika Flex sucks big butt, don't use it for anything! (ok, maybe for sticking a post card to your 'fridge door)
c) ANYTIME you hear a funny noise pull over immediately! I can only hope the panels landed intact in the sage and some lucky bastid found them. Use them in good health bro!

Cheers and I now return this thread to it's regularly scheduled programming.
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Old 09-02-2019, 01:07 AM   #38
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Default Re: What Hwy Mileage does your 4X4 get?

Hey, my truck is a 3500 170 high roof with 4.18ís running 235/85-16ís out back (4 of them) and 265/75-16ís on super single rims up front and I weigh about 8800 lbs. Ill see around 16 to almost 18 depending on hills and wind @ 65 mph. The slower I go the worse the mileage gets, just got to keep it rolling. I avg. 11.5 towing my trailer (approx 8200 lbs.) NY to Alabama about 950 miles. And thatís pretty dam hilly I-81 up the hills 50 to 60 down the hills 70/75. 70 on the flats. The trailer is 12í, 15í including the V nose, long tongue, twin 7500 lb. torsion axles electric brakes. Also the van has one max air roof vent

Last edited by Proper Piper; 09-02-2019 at 01:10 AM. Reason: More info
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Old 09-10-2019, 04:10 PM   #39
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Default Re: What Hwy Mileage does your 4X4 get?

I had an interesting conversation with Joe Russo (from the youtube channel We're the Russos) at the Adventure Van Expo last weekend. He has had a Quigley Transit built by Storyteller Overland for the past few months, and now a Storyteller Overland 2019 4x4 Sprinter (with the 7-speed). The Transit had the Ecoboost and of course the Sprinter the V6 diesel, and he says they both get the exact same mileage, 15 MPG.
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Old 09-10-2019, 07:16 PM   #40
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Default Re: What Hwy Mileage does your 4X4 get?

I just recently completed a cross country trip after purchasing the van a week ago. A very light conversion set up as a wheelchair accessible cruiser instead of a camper. My 2016 - 2500 170wb 4x4 handled it really well. With strong headwinds in Utah we averaged 16.8 mpg running around 79-80mph. From Lincoln, NB to Cleveland, OH we averaged 17.6 mpg at an average of 77-78 mph with a lighter headwind.

I knew I would like this vehicle but the drive cross country convinced me I made the right choice. Absolutely love this thing. Driving it through the mountains and in places like Zion and Bryce was fantastic.
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