Re: [MBZ] Ultra low sulfur diesel and old Injector Pumps
After a very short drive my daughter was sitting at a traffic light in her GL320cdi SUV when she noticed a big white cloud of something that looked like it may have come out of her exhaust. There was no other car close by that could have produced it. The car has just had it's first major service since she bought it. She says she may have gotten a tankful of less than the ultra low sulphur fuel. She hasn't seen any more white clouds behind the SUV since then. Does anyone have an idea what could have caused such a cloud? The only thing I could think of would be a headgasket letting water into a cylinder. The dealer is 60 miles away, so driving it there could be risky if there is something seriously wrong. Thanks, Gerry - Original Message - From: Peter Frederick [EMAIL PROTECTED] The lubricating qualities of the sulfur in diesel fuel are in the sulfur containing organic molecules. There is no free sulfur dissolved in diesel fuel, it's all part of some carbon containing molecule (there are many). It's removed by breaking up those molecules and precipitating out the molecular sulfur. Those sulfur containing molecules provide most of the lubricating qualities of diesel fuel, and are in fact quite good high pressure lubricants (much better than the paraffins or linear hydrocarbons, which make up 90+ % of the bulk diesel). Taking them out greatly reduces the lubricating nature of the fuel. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Ultra low sulfur diesel and old Injector Pumps
Did her AC start blowing not as cold at the same time? AC blow off valves cutting loose at stop lights on real hot days is pretty common., Wind up with an unknown cloud either billowing out from under the hood or out the back if the engine fan is kicked in . ---Robert archer wrote: After a very short drive my daughter was sitting at a traffic light in her GL320cdi SUV when she noticed a big white cloud of something that looked like it may have come out of her exhaust. There was no other car close by that could have produced it. The car has just had it's first major service since she bought it. She says she may have gotten a tankful of less than the ultra low sulphur fuel. She hasn't seen any more white clouds behind the SUV since then. Does anyone have an idea what could have caused such a cloud? The only thing I could think of would be a headgasket letting water into a cylinder. The dealer is 60 miles away, so driving it there could be risky if there is something seriously wrong. Thanks, Gerry - Original Message - From: Peter Frederick [EMAIL PROTECTED] The lubricating qualities of the sulfur in diesel fuel are in the sulfur containing organic molecules. There is no free sulfur dissolved in diesel fuel, it's all part of some carbon containing molecule (there are many). It's removed by breaking up those molecules and precipitating out the molecular sulfur. Those sulfur containing molecules provide most of the lubricating qualities of diesel fuel, and are in fact quite good high pressure lubricants (much better than the paraffins or linear hydrocarbons, which make up 90+ % of the bulk diesel). Taking them out greatly reduces the lubricating nature of the fuel. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Ultra low sulfur diesel and old Injector Pumps
On 8/30/07, archer [EMAIL PROTECTED] wrote: After a very short drive my daughter was sitting at a traffic light in her GL320cdi SUV when she noticed a big white cloud of something that looked like it may have come out of her exhaust. There was no other car close by that could have produced it. The car has just had it's first major service since she bought it. I don't know what kind of reputation the dealer service department where you live has, but around here I'd immediately suspect them of breaking something. Alex Chamberlain '87 300D Turbo kept far from the hamfisted clutches of dealer service ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Ultra low sulfur diesel and old Injector Pumps
I'll ask her. Thanks Robert. Gerry - Original Message - From: Robert Tara Ludwick [EMAIL PROTECTED] Did her AC start blowing not as cold at the same time? AC blow off valves cutting loose at stop lights on real hot days is pretty common., Wind up with an unknown cloud either billowing out from under the hood or out the back if the engine fan is kicked in . ---Robert archer wrote: After a very short drive my daughter was sitting at a traffic light in her GL320cdi SUV when she noticed a big white cloud of something that looked like it may have come out of her exhaust. There was no other car close by that could have produced it. The car has just had it's first major service since she bought it. She says she may have gotten a tankful of less than the ultra low sulphur fuel. She hasn't seen any more white clouds behind the SUV since then. Does anyone have an idea what could have caused such a cloud? The only thing I could think of would be a headgasket letting water into a cylinder. The dealer is 60 miles away, so driving it there could be risky if there is something seriously wrong. Thanks, Gerry ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Ultra low sulfur diesel and old Injector Pumps
- Original Message - From: Alex Chamberlain [EMAIL PROTECTED] I don't know what kind of reputation the dealer service department where you live has, but around here I'd immediately suspect them of breaking something. Alex Chamberlain '87 300D Turbo kept far from the hamfisted clutches of dealer service True. They just bought the car and it has a very long warrantee on it, so they don't have much choice. Their main problem is the distance from a dealer. Gerry ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Ultra low sulfur diesel and old Injector Pumps
Sulfur is an anti-flux, that is, it does the opposite of promoting welding. That is its function in Extreme Pressure Lubricants and also, I suspect, in operation of old rotary Bosch IP's. IMHO, it's a poor deslulfurization process that removes something besides sulfur. I'd need to hear that the latest process removes not only the sulfur, but the goodies that lubricate, with some explanation of process, from a chemical engineer or someone similarly qualified. Paraffin is a generic name that refers to hydrocarbons having a particular type of structure. There are a whole series of paraffins of different molecular weights. Paraffin is not one chemical. That's all the chemical engineering I know or even suspect. Someone else will have to take it farther. Peter Merle wrote: It's the sulphur that's the lubricant , not pariffin PEter Sulfur is NOT a lubricant (where did you get that idea?). When sulfur is removed from the diesel fraction of crude by most usual methods it also remove the fractions that are the best lubricants. These CAN be replaced, but until forced to, most refiners didn't. Marshall -- Marshall Booth Ph.D. Ass't Prof. (ret.) Univ of Pittsburgh School of Medicine [EMAIL PROTECTED] ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
Re: [MBZ] Ultra low sulfur diesel and old Injector Pumps
The lubricating qualities of the sulfur in diesel fuel are in the sulfur containing organic molecules. There is no free sulfur dissolved in diesel fuel, it's all part of some carbon containing molecule (there are many). It's removed by breaking up those molecules and precipitating out the molecular sulfur. Those sulfur containing molecules provide most of the lubricating qualities of diesel fuel, and are in fact quite good high pressure lubricants (much better than the paraffins or linear hydrocarbons, which make up 90+ % of the bulk diesel). Taking them out greatly reduces the lubricating nature of the fuel. Peter ___ http://www.okiebenz.com For new parts see official list sponsor: http://www.buymbparts.com/ For used parts email [EMAIL PROTECTED] To Unsubscribe or change delivery options go to: http://okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
