Whats pulling your RPod |
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podwerkz
Senior Member Joined: 11 Mar 2019 Location: Texas Online Status: Offline Posts: 966 |
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Topic: Whats pulling your RPod Posted: 08 Aug 2020 at 7:57am |
lol...before they took (almost) all of the sulfur out of diesel fuel, I used to love the way those smoky old buses and dumptrucks smelled...
But actually, newer on-road diesels are very clean burning, its all part of the emissions technology, including particulate filters and DEF injection. Having said that, yeah the mouth-breathers that drive around with 'deleted' diesel pickups, rolling coal and making a bunch of racket, are giving modern diesels a bad name. |
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r・pod 171 gone but not forgotten!
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malkbean2
Groupie Joined: 31 Jan 2017 Online Status: Offline Posts: 80 |
Post Options Quote Reply Posted: 08 Aug 2020 at 7:41am |
dont know about all that other stuff but i do know that burning deisel stinks and gasoline doesnt
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rpod 178
Grand Caravan |
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offgrid
Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290 |
Post Options Quote Reply Posted: 08 Aug 2020 at 5:50am |
A lot of effort? Took me a whole 30 seconds. I didn't look up any charts, and my 15% was meant as a rough approximation for volume units, which is how we all buy the stuff, as was clearly stated by both the OP and myself. Bottom line, you cannot directly compare fuel economy between the two fuels on an miles per gallon basis. Running down diesel? Not at all. I have nothing against diesel other than that its a fossil fuel, but so is gasoline, propane, etc. I've used them all in both my own engines and in hybrid remote power systems I've designed and installed professionally. Each has its advantages and disadvantages. If you like to run diesel then go for it. Just don't argue that you have great fuel economy because you consume 15% less fuel by volume than gasoline. You don't. I do want to see a level playing field though. The fact is that once diesel was required to play by similar emissions rules as gasoline it lost much of its advantage in lighter vehicles. And if you disagree that diesel should meet the emissions standards just go spend a few months in India as I have, where you have whole cities choking to death on PM2.5 diesel particulate pollution, then let's talk.
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold |
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jato
Senior Member Joined: 23 Feb 2012 Location: Kewadin, MI Online Status: Offline Posts: 3227 |
Post Options Quote Reply Posted: 07 Aug 2020 at 9:35pm |
Yes indeed, original motor and transmission. With the engine I did change out the distributor cap every other year and the plugs every third year. Use synthetic oil and change at every 10,000 miles. On the tranny side it had to have a new clutch and throw out bearing (yes, a stick shift) at 268,000 miles, not too bad for a work truck. The most amazing thing is that after killing 31 deer (all in the front end of the truck) the only 2 times it sustained damage was once when I was sitting still watching about 30 deer cross in front of me 40 yards away, this deer came out of the cornfield and coldcocked me right behind the driver door, had only owned the truck for 2 days, put a hefty dent in the side of the truck and the crazy deer left with only a lump on her head. Unfortunately there was no insurance on the truck yet so I lived with that dent for 21 years. Second time was in the winter when a snowshoe rabbit jumped in front of me and took out the front grill and my radiator. Hmmm, that rabbit kill cost more to fix than 31 deer kills together - go figure.
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God's pod
'11 model 177 '17 Ford F-150 4WD 3.5 Ecoboost Jim and Diane by beautiful Torch Lake "...and you will know the Truth and the Truth will set you free." |
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StephenH
podders Helping podders - pHp Joined: 29 Nov 2015 Location: Wake Forest, NC Online Status: Offline Posts: 6289 |
Post Options Quote Reply Posted: 07 Aug 2020 at 9:01pm |
That chart is slightly misleading. We fill our tanks by the gallon or liter, not by the pound. Therefore, it makes sense to calculate the energy per gallon or liter, not per pound. The chart is best interpreted then by looking at the right hand column. Gasoline has 114761 Btu/gal and Diesel has 129306 Btu/gal.That means that Diesel fuel has 112.68% more energy per gallon than gasoline or put the other way, gasoline has only 88.75% of the energy of Diesel per gallon. What hurts gasoline also is the Ethanol blends. The figure I saw stated that 10% ethanol blends have only slightly over 96% of the BTU value of straight gasoline. That makes the difference between Gasohol and Diesel even larger. This Gasoline Gallon Equivalent Table provides a pretty good picture of these relative values.
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StephenH
Happy is the man that findeth wisdom,... ouR escaPOD mods Former RPod 179 Current Cherokee Grey Wolf 24 JS |
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podwerkz
Senior Member Joined: 11 Mar 2019 Location: Texas Online Status: Offline Posts: 966 |
Post Options Quote Reply Posted: 07 Aug 2020 at 8:48pm |
Mark Twain said it: There are lies, damn lies, and then there are statistics.
The fact is, we don't buy diesel or gasoline by the pound, we buy it by the gallon, and...by the gallon, diesel has about 15% more BTU per gallon as stated by offgrid, and showing in the chart. Diesel can cost 15% more, or sometimes as high as 50% more per gallon depending on the pump prices in effect at the time. Then figure in higher maintenance cost for the diesel engine over its life, and DEF, etc, the differences are not that significant for light trucks and commuter cars. Certainly, the higher power that turbo diesels produce IS a huge advantage when pulling trailers.
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r・pod 171 gone but not forgotten!
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Colt
Senior Member Joined: 16 Nov 2019 Online Status: Offline Posts: 383 |
Post Options Quote Reply Posted: 07 Aug 2020 at 8:21pm |
Offgrid, That's sure a lot of effort to run down diesel. Diesel IS more dense than gasoline, but the BTU content is not significantly different, with a slight edge to gasoline. Combustion occurs on a mass basis, so comparing BTU/lb or kg makes sense. The attached pic is from engineeringtoolbox.com |
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John
'16 R-Pod 180 |
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offgrid
Senior Member Joined: 23 Jul 2018 Online Status: Offline Posts: 5290 |
Post Options Quote Reply Posted: 07 Aug 2020 at 9:02am |
Sounds like a good TV.
You can’t directly compare diesel and gasoline fuel economy though. Roughly speaking, diesel contains about 15% more energy than gas, costs about 15% more, and produces about 15% more CO2 per gallon. So you can get a pretty close comparison to gas if you reduce diesel fuel economy by 15%, which is about 2 mpg towing, 4 mpg not towing. |
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1994 Chinook Concourse
1995 RV6A Experimental Aircraft 2015 Rpod 179 - sold |
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Bounder
Newbie Joined: 28 Jul 2020 Online Status: Offline Posts: 15 |
Post Options Quote Reply Posted: 07 Aug 2020 at 2:00am |
I guess we're outliers as far as tow vehicles go - ours is a Mercedes GL350, the one with the diesel twin-turbo V6. When not towing it gets 27-30 highway mpg, and still manages 12-14 mpg at 70 mph with the 196 behind it. The factory hitch is rated at 7500 lbs, and factory 7-pin wiring made installation of a Redarc brake controller fairly simple using the Tekonsha harness.
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Bounder
2021 196 Hood River |
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onesojourner
Newbie Joined: 23 Nov 2018 Location: The Ozarks Online Status: Offline Posts: 29 |
Post Options Quote Reply Posted: 03 Aug 2020 at 7:12am |
That is great about the house. In fact that is our primary goal. We are well on our way to getting it paid for but still a few more years out, during my 40th year is the goal. The rona may put a damper on that but we will see. Tell me more about that truck. Is that the original motor and transmission? Very impressive.
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