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  #1  
Old January 30th, 2013, 09:37 PM
gomotomoto
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Interesting diesel facts

Just today i read that some diesels can burn cooking oil if the ratio is right? So I figured post up and ask what's fact and fiction about diesels, specifically the ones found in the defender 110's.

Basically looking to learn any Other quirky facts and trivial things that make the Diesel engine unique.
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  #2  
Old January 30th, 2013, 09:45 PM
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Compression is far higher than gasoline motors.
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Old January 30th, 2013, 09:46 PM
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Diesels were originally designed for farmers to run off plant oil.
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Old January 30th, 2013, 09:49 PM
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Diesel has more btu's than any other common fuel (natural gas, gasoline, propane etc)
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Old January 30th, 2013, 09:59 PM
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Back in the UK I ran a 200tdi 90 of a diesel/veg oil mix, 50/50 in winter, 30/70 in summer, ran fine no worries at all, just tipped it straight into the tank with the diesel. Im told you shouldnt try it with a Td5 though as the electronic injection system wont handle the change in fuel viscosity well.
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Old January 30th, 2013, 10:02 PM
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Quote:
Originally Posted by Michael110 View Post
Back in the UK I ran a 200tdi 90 of a diesel/veg oil mix, 50/50 in winter, 30/70 in summer, ran fine no worries at all, just tipped it straight into the tank with the diesel. Im told you shouldnt try it with a Td5 though as the electronic injection system wont handle the change in fuel viscosity well.
Where'd you typically score the veg oil from?
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Old January 30th, 2013, 10:11 PM
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Quote:
Originally Posted by nathanwind View Post
Where'd you typically score the veg oil from?
In France(Europe?), when gas/diesel price hits really high prices, some folks go to real cheap grocery stores (think Walmart or cheaper discount chains which you would not want to consider for food you would want to ingest unless you lost a stupid bet) and get veg oil in the larger jugs (the quart size takes too much time/effort to fill a tank, go one gal size at the minimum; 5L in France is decently common). Note that in France this is totally illegal.
Straight Veg oil works fine in the 2.5L engine for sure in the summer. Always help a little to mix with diesel for additive/anti-freeze agents in there (helps in the winter). I think I personally would have no problem using some in the 300Tdi. I'm not familiar enough with the Td5 or Td4 to provide any feedback.

Risks?
- gaskets go bad faster than planned (I'm not aware of anyone raising as an issue on the 2.5L/300Tdi)
- if temp is too low, then fuel is not liquid enough => pump has to work harder, might be causing premature wear => mix with diesel
- Might not burn correctly => higher emissions

I just Googled the risks, this seems fair: http://www.ehow.com/list_5783028_dis...oils-fuel.html

It's all about risk/rewards.
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  #8  
Old January 30th, 2013, 10:13 PM
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I used to buy it new, while it was two thirds the price of diesel. I didn't have the space to set up a cleaner, but some guys were running used oil from takeaways, just have to be really careful to separate the water and hard fats out.
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  #9  
Old January 30th, 2013, 10:21 PM
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FYI the Veggie oil when burned smells pretty bad, far worse than diesel, had a 300td come in the scrapyard running it, i did not enjoy the smell at all.
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Old January 30th, 2013, 10:21 PM
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It is highly recommended to convert your fuel system if you plan to run SVO (straight vegetable oil). Heated fuel lines are included in that conversion and plenty of companies offer conversions or kits. Personally I prefer the slightly more refined biodiesel, where virtually no conversion is needed (just make sure all fuel related hoses are synthetic). Biodiesel smells great

You should be able to get used vegetable oil from any fast food chain. They have to pay to dispose of it so shouldn't be a problem getting it donated. For $3500 you can get a biodiesel processor and start your own refinery at home:
http://www.evolutionbiodieselkits.com/
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Old January 30th, 2013, 10:24 PM
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Quote:
Originally Posted by JohnsD90 View Post
FYI the Veggie oil when burned smells pretty bad, far worse than diesel,
This is where I make the strange confession that I don't mind the smell of diesel.
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  #12  
Old January 30th, 2013, 10:29 PM
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As good as cancer causing toxins can smell I guess. I've never smelled SVO but I love the smell of biodiesel. Smell like french fries. Makes me hungry

Quote:
Originally Posted by nathanwind View Post

This is where I make the strange confession that I don't mind the smell of diesel.
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  #13  
Old January 30th, 2013, 10:40 PM
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Originally Posted by Manimal View Post
As good as cancer causing toxins can smell I guess. I've never smelled SVO but I love the smell of biodiesel. Smell like french fries. Makes me hungry
I never minded the smell of the diesel/veg oil mix, although I wouldn't recommend purposely inhaling either. Might depend on the type of veg oil of course, in the UK its mostly rapeseed oil.
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  #14  
Old January 31st, 2013, 02:36 AM
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Just interested really, I don't plan on burning my deep frying oil.

Was curious what else to expect with my first diesel.
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  #15  
Old January 31st, 2013, 06:37 AM
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In the summer time I mix 50/50 SVO/diesel and I use 100% diesel in winter. Cuts down on bill and the smell ain't that bad. It all depends on where you get your SVO. Chinese restaurant will produce svo that smells Chinese and so on.. The only thing to consider is the waxing temperature for your svo. If it wax then your engine will stop as the filter will clog. Once you're in higher temperature you will not notice any difference from svo to diesel. Perhaps a small drop in power and a cheap restaurant smell!
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Old January 31st, 2013, 08:14 AM
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Quote:
Originally Posted by bossman429 View Post
Diesel has more btu's than any other common fuel (natural gas, gasoline, propane etc)
Which is why it is more expensive than gas. It requires less refining but since it results in more btu energy, it is priced accordingly.
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Old January 31st, 2013, 08:22 AM
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Originally Posted by Viggen View Post
Which is why it is more expensive than gas. It requires less refining but since it results in more btu energy, it is priced accordingly.

Diesel has a higher tax rate also. At the Fed level its about $0.06 a gallon and it varies at the state level.
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Old January 31st, 2013, 09:09 AM
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But it used to be cheaper. Which I don't get
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Old January 31st, 2013, 09:21 AM
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Quote:
Originally Posted by gomotomoto View Post
Just today i read that some diesels can burn cooking oil if the ratio is right? So I figured post up and ask what's fact and fiction about diesels, specifically the ones found in the defender 110's.

Basically looking to learn any Other quirky facts and trivial things that make the Diesel engine unique.
The first diesel engine used peanut oil.

Quote:
Originally Posted by nathanwind View Post
Where'd you typically score the veg oil from?
I have a buddy that scores it from Mc D, BB, and the likes for free.

He has a "process" plant to clean it.

It's a very kool project. I've been meaning to do this for the last 15 years.

You end up smelling like french fries.
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  #20  
Old January 31st, 2013, 09:49 AM
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Worn Diesel engines can go into a run-a-way condition:

http://youtu.be/5zx3qKX_Pno
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