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  #1  
Old March 8th, 2007, 11:51 PM
bterpstra
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Brian Terpstra
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Need expert diesel opinions

130k miles on the clock, so sometime in the next year or so, will need a rebuild/replacement on the engine.

Preferred route is to do the international 2.8 liter diesel swap and would like to get my mechanic started assembling all the necessary crap.

Question: with the new low sulphur diesel fuel what is the prognosis for older engine designs? Worried about valve seats, injector pumps and injectors all failing over time due to less lubricity in the fuel. Am I worried over nothing? Will the 2.8 be able to handle the new fuel?

My mechanic is a bit concerned, and suggests I just rebuild the 3.9

Welcoming any and all (informed) opinions.

Brian T.
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  #2  
Old March 9th, 2007, 05:56 AM
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smenzel
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Adding just the slightest bit of biodiesel (0.5%) will offset the loss of lubrication suffered from the lower sulphur levels in diesel.

I think it's just a matter of time before all states (preferably the feds) mandate a certain percentage biodiesel be included in diesel fuel the same way that ethanol is being included in gasoline. Washington state's law goes into effect November 30, 2008.
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Old March 9th, 2007, 07:21 AM
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Jim Cheney
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I dont think its been discontinued, I think its in spot production where they'll still make runs of them, but arent turning them out continuously.
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  #4  
Old March 9th, 2007, 11:38 AM
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Trevor K
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Quote:
Originally Posted by JimC
I dont think its been discontinued, I think its in spot production where they'll still make runs of them, but arent turning them out continuously.
which means the price for the conversion will go up to what 15-16k?
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  #5  
Old March 9th, 2007, 03:38 PM
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Brian, just take the diesel out of your G before you sell it and swap em!
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  #6  
Old March 9th, 2007, 04:59 PM
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Quote:
Originally Posted by smenzel
Adding just the slightest bit of biodiesel (0.5%) will offset the loss of lubrication suffered from the lower sulphur levels in diesel.

I think it's just a matter of time before all states (preferably the feds) mandate a certain percentage biodiesel be included in diesel fuel the same way that ethanol is being included in gasoline. Washington state's law goes into effect November 30, 2008.
Are you sure? It's a question that you seem to get different answers to. I had to have my pump tweaked so I went down to SD to a diesel pump specialist. Right as you walk in there is a large picture showing a new pump, and a picture next to it showinng the same pump destroyed with a note that says "after 1 month of biodiesel, don't even think about it". I have heard good and bad about the Bio. Wonder what the truth is.
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Old March 9th, 2007, 05:18 PM
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Brian Terpstra
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Quote:
Originally Posted by Treuwer
Brian, just take the diesel out of your G before you sell it and swap em!
Mercedes makes a great diesel for sedans, but the 300TD sacrifices a LOT of low-end torque. Not the best engine for an off-roader.
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Old March 9th, 2007, 08:37 PM
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Just add a quality diesel fuel conditioner with each tank. It will last forever.

BD is fine for these style of pumps. The problems are with some of the newer higher pressure pumps due to the higher viscosity.
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Old March 10th, 2007, 12:30 AM
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Quote:
Originally Posted by Buckon37s
Are you sure? It's a question that you seem to get different answers to. I had to have my pump tweaked so I went down to SD to a diesel pump specialist. Right as you walk in there is a large picture showing a new pump, and a picture next to it showinng the same pump destroyed with a note that says "after 1 month of biodiesel, don't even think about it". I have heard good and bad about the Bio. Wonder what the truth is.
That should have been your first clue to turn around and go somewhere else where they don't have their head buried in the sand.
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  #10  
Old March 10th, 2007, 01:18 AM
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Quote:
Originally Posted by roverhybrids
That should have been your first clue to turn around and go somewhere else where they don't have their head buried in the sand.
Good point - there is a vocal minority that is really interested in misinforming/disinforming people about the properties of fuel. The anti-bio people are surprisingly large in number, and there is of course the anti-ULSD contingent. Europe has been using both these products longer than us here in the states, and the only side effect seems to be the large number of people enjoying the performance and economy of diesel engines. Those Europeans are pretty stupid.
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  #11  
Old March 10th, 2007, 09:00 AM
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ulsd does suck but it is better than unleaded still. Use a good additive all the time and you will be fine. There is definitely a loss of fuel economy and the stuff want to gel at a MUCH higher temp but it is what we will be living with for the future so time to get used to it.
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  #12  
Old March 10th, 2007, 02:12 PM
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Quote:
Originally Posted by roverhybrids
That should have been your first clue to turn around and go somewhere else where they don't have their head buried in the sand.
They were fantastic, Certified bosch experts and had my pump adjusted perfectly by feel. They have been in business since the 70's. Personally, I would take their opinions before I would any on the internet.
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