Gas vs Diesel Prices - Page 3 - Fiberglass RV


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Old 01-25-2013, 11:22 PM   #29
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Any questions on climate change are well-addressed at climate.nasa.gov; I recommend the "Global Ice Viewer." I remember visiting Alaska as a kid, especially stopping at a particular glacier near Denali; when I went back a few years ago that glacier was completely gone (that's not how they normally work).

As to the thread topic, we drive a Jeep Liberty CRD, which we chose for its combination of high fuel mileage and high torque. Plus, with a diesel, you always have the option of running it on veggie oil, the way Rudolf Diesel intended. Refined biodiesel, even kerosene will run a diesel engine. Gas engines have no options.
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Old 01-26-2013, 11:27 AM   #30
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Plus, with a diesel, you always have the option of running it on veggie oil, the way Rudolf Diesel intended.
Rudolf specifically used peanut oil.

I wouldn't recommend a veggie conversion on anything that has to be driven in below freezing temperatures. Most common rail diesels don't seem to get along with it and HEUI diesels are an absolute no for veggie oil.
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Old 01-26-2013, 12:52 PM   #31
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Well, you would not want to drive on straight VO in low temps without a conversion kit, but the kits heat the fuel lines, so that prevents cold-related problems. Here's a post from a happy CRD owner running on VO in Alaska with a conversion kit. He credits warming the fuel lines with better fuel mileage whether running on veggie or dino fuel. That's really something, considering my uncle in Alaska had problems with even petroleum diesel gelling up when it got as cold as it does up there. That's when he'd add the kerosene to get it started and warm the system up to get things flowing.

Of course you could mix VO or biodiesel 50/50 with dinodiesel if you were concerned. But the CRD forums are filled with people running on 100% biodiesel - which has the added plus of cleaning your fuel lines of the gunk leftover from the dino fuel.
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Old 01-26-2013, 01:38 PM   #32
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I've had to repair far too many vehicles damaged by bio diesel and bio diesel setups- including the "professionally" installed ones. It soured me to any idea of bio diesel.
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Old 01-26-2013, 10:11 PM   #33
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What annoys me even more are the people who lump bio diesel and straight VO together. One is basically filtered oil straight from the fryer at McDonalds. The other is refined into virtually the same thing that you buy at the pump.

[/rant]

Sorry, that's a hot button
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Old 01-27-2013, 12:05 AM   #34
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What annoys me even more are the people who lump bio diesel and straight VO together. One is basically filtered oil straight from the fryer at McDonalds. The other is refined into virtually the same thing that you buy at the pump.

[/rant]

Sorry, that's a hot button
Its not the same as diesel, but will work on some vehicles.
Heui is one injection system that tends to be destroyed by anything other than straight diesel. Heui injectors can run $1000.00 each on certain applications.
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Old 01-27-2013, 06:46 AM   #35
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Diesel fuel and home heating oil are the same product. Currently in central VT heating oil and off road diesel are selling for $3.90/gal and diesel fuel is at $4.40/gal. Regular gas is $3.52. This time of year diesel fuel users are competing with home owners. Increased demand causes an increase in price.

Since diesel fuel is used mostly by commercial vehicles, the cost is passed on, ultimately to the consumer. A portion of that is tax. Be it state or federal, it is really a hidden sales tax. Raz
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Old 01-28-2013, 11:06 AM   #36
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Let me clarify one thing. Most if not all diesel engines, including CR, will run bio diesel with no modifications. The only thing that may have to be changed is from rubber to Viton seals.

On the other hand, just about any diesel engine requires modifications, fuel heaters, secondary tanks, etc to run vegetable oil.

There are some fuel dilution issues from post injection for DPFs, but then we are splitting hairs. BTW, I work on TDIs and swap info and stories with the GM techs across the shop.

Jason
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Old 01-28-2013, 05:17 PM   #37
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Well I like my Sprinter and get around 26 MPG or so most of the time.
The Sprinter also starts easily in any weather I have had it in so far and I have never plugged it in either.
I can haul like crazy and empty or full get the same mileage.
Towing the Casita it drops to around 20MPG.

The Tundra V8 gets about 1/2 that but is a lot more comfy too.

I would never try running the Sprinter on any Bio Fuel,it does not even like a lot of straight Diesel that I try?
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Old 01-28-2013, 06:53 PM   #38
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There are some fuel dilution issues from post injection for DPFs, but then we are splitting hairs. BTW, I work on TDIs and swap info and stories with the GM techs across the shop.

Jason
GM doesn't make diesels anymore. They're all Isuzu products.

I generally don't touch anything with less than a 10,000lb GVWR. The problem most of these vehicles have with bio fuel is the lack of lubrication in the pumps- or inside the ridiculously over complicated HEUI injector.
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