Doug,
As Mark alluded to - ULSD is the wrong fuel for our MB 300D engines. In the process of removing the sulfur, the refinery also removes the lubricity. We need to add lubricity or that fabulous Injection Pump with its tight clearances will bind up. We can add a little biodiesel or pick your favorite. I am partial to MMO (Marvel Mystery Oil), but have not tested it.
This is a very important for all of us.
(Weird Reality Note - It is legal to sell and use LSD (Low Sulfur Diesel - not what you were thinking - the previous government mandated diesel fuel, which we used for years) in any diesel made before 2008. In spite of the fact that there are lots of pre 2008 diesels, the oil companies no longer make and sell it. Has anyone seen any?)
Bobby
Here is a large part of the answer as too why Diesel Fuel is so much more expensive than gasoline,, we have small mountains of sulfur along the ship channel here in Houston area, as per the EPA, they have to refine almost all the sulfur from the Diesel fuel, too make ultra low sulfur fuels,,thats very expensive, an then someone has too store all that huge amount of sulfur, thats very expensive, too much of it, an nothing its good for either. So, NOW we pay at the pump.Back in the good old days of cheap Diesel fuel, all that sulfur went out the tailpipe as pollution, an eventually acid rain an such,,, you guys from California should remember, an know that clean air costs us all money,, ya do remember CARB right, well its all over Texas too now, we pay about 50 cents a gallon of Diesel for cleaner air, which is rare around Houston..My concern, being a long time Diesel Tech /Instructor, is what is the long term effect upon my darling 300d s fuel system, an pistons, maybe valves. Will my like new running engine still last forever with the ultra low sulfur or not,, thats a good question.So bottom line, now we are having too pay a lot extra for the ultra low sulfur Diesel fuel, is it worth the cost, in cancer rate, an are we loosing part of the energy in the fuel at the same time. Our exhaust systems should last longer, without all the sulfuric acid coming thu.Lots of unanswered questions other than the premium cost we are having to pay at the pump. I do not think there are answers to many of the questions, but one thing for sure, our Mercedes engines were designed to run on Diesel fuel that contained mucho sulfur, a type fuel no longer available, except in maybe Mexico.Anyone want about a million tons of raw sulfur, Texas will sell it to you CHEAP, almost free, come get the stuff, makes an ugly mountain here in Texas. Plus it stinks like someone eating too much bean dip.Doug Traylor 300d daily driver, 300SD carport parts queen w/ wunderbar turbo engine.
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Toward freedom,
Bobby Yates Emory
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