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Shell ultra diesel vs regular
by
Cheesetoast
on 21 Jul, 2007 21:06
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the new shell station here has ultra diesel and regular, it's abot a 3 cent difference, is it worth it?
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#1
by
jtanguay
on 21 Jul, 2007 22:09
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imo i get better performance and economy using gold diesel + power service diesel fuel conditioner.
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#2
by
Cheesetoast
on 22 Jul, 2007 01:34
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i find the problem with the cetane booster and conditioner is that it smells sooo bad, and hard to get that smell off your hands, i don't really want to carry that stuff in my car, the smell leaks right through zip lock bags.
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#3
by
burn_your_money
on 22 Jul, 2007 06:51
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Yeah my car stinks from power service, that's because I cut my back seat out though.
I don't notice a difference with the ultra diesel
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#4
by
mvptrukin
on 23 Jul, 2007 10:49
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I haven't seeen Ultra diesel in the states is the cetane # higher than regular diesel?
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#5
by
jtanguay
on 23 Jul, 2007 15:38
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i leave power service in my garage... plus i have a pump handle for it to further decrease the smell.
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#6
by
bigblockchev
on 23 Jul, 2007 17:53
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I know that Biodiesel has a cetane rating or around 50 while #2 diesel is 40-45 for ULSD. It also has excellent lubricity characteristics. I understand that in Europe diesel is mandated to contain 5% Bio to replace the sulphur for lubricity. Think of how bad your engine sounds when it gets some gasoline accidentally mixed in, this is due to the low cetane rating of gasoline. I think that in the bad old days when diesel contained sulphur and other impurities our engines lasted much longer. Think of it as using a lubricant for fuel (diesel) as opposed to a solvent (gasoline). I am given to understand that ULSD is a "dry" fuel with little or no lubrication properties. We will see how this affects the lifespan of our engines. I have been using BD for the last couple of years. Cheers Dan
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#7
by
Black Smokin' Diesel
on 23 Jul, 2007 18:12
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ULSD has stuff added in it to increase lubricity, I wouldn't worry about that.
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#8
by
jtanguay
on 23 Jul, 2007 18:35
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apparently it isn't the sulphur that lubricates, but the process of removing sulphur removes the lubricity of the raw diesel fuel.
sulphur might help certain areas, but IMO, i would believe sulphur to be a good way to 'gunk' up things like filters, injectors, etc.
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#9
by
bigblockchev
on 23 Jul, 2007 19:48
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JT you are right the sulphur is not the lubricant in reg diesel. The other compounds which are removed when the sulphur is,do the lubricating. I am interested to see how the lifespan of our injection systems is affected by using ULSD. I have heard complaints from various people regarding their injection pumps already. It remains to be seen whether this is caused by the fuel or some design factor in the injection system. I have misgivings about the newer technologies using extremely high pressures. I know that this is where technology is headed but I am not sure about the durability of the systems. Cheers Dan
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#10
by
Black Smokin' Diesel
on 23 Jul, 2007 21:09
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I have heard complaints from various people regarding their injection pumps already.
There have been complaints but all of them (the one I heard anyway) were about leaks on the injection pump. I've yet to hear anything related to accelerated pump wear or premature failure due to the supposedly reduce lubricity.