Direct Injection and American Gasoline
03-22-2009, 12:15 PM
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My Ride: 2005 530, Nav, HUD, Sat Radio, Xenon, Cold Pkg,
Direct injection on a gasoline or diesel engine cannot tolerate any water. American gasoline with ethanol combines with water in such a way that it cannot be separated by a filter as would be done for a diesel engine. If one is unlucky enough to get a tank of contaminated gas, there is going to be a failure of the HPFP and/or the injectors.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
03-22-2009, 12:33 PM
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Originally Posted by Newdetour' post='823925' date='Mar 22 2009, 04:15 PM
Direct injection on a gasoline or diesel engine cannot tolerate any water. American gasoline with ethanol combines with water in such a way that it cannot be separated by a filter as would be done for a diesel engine. If one is unlucky enough to get a tank of contaminated gas, there is going to be a failure of the HPFP and/or the injectors.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
03-22-2009, 12:54 PM
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Originally Posted by Newdetour' post='823925' date='Mar 22 2009, 04:15 PM
Direct injection on a gasoline or diesel engine cannot tolerate any water. American gasoline with ethanol combines with water in such a way that it cannot be separated by a filter as would be done for a diesel engine. If one is unlucky enough to get a tank of contaminated gas, there is going to be a failure of the HPFP and/or the injectors.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
03-22-2009, 01:10 PM
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Originally Posted by geekmedic' post='823952' date='Mar 22 2009, 04:49 PM
Maybe we can import gasoline from Europe, like we import water from Fiji? 
its the crap we do to it here that makes it what it is or isnt
03-22-2009, 09:02 PM
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Originally Posted by craigm1841' post='823960' date='Mar 22 2009, 05:10 PM
we already import our fuels. you might have heard about that on the news
03-22-2009, 11:03 PM
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I fear that the 535 engine will not be able to enjoy the reliability that the conventionally injected engines have always demonstrated. It is not a design fault that can be corrected by a newer design, but more of a strategic error of expecting all gasoline with ethanol to be completely water free.
03-23-2009, 08:57 AM
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Originally Posted by geekmedic' post='824303' date='Mar 23 2009, 01:02 AM
No, I missed that. I know we import oil, but I thought all gasoline was refined here in the US?
03-23-2009, 10:57 AM
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My Ride: 2010 VW Passat Wagon 2.0l Tsi
Grey/Grey Budapest 18"
Lost to HPFP issues:
08 535i sport pkg
Lost to Dreaded E61 Sun roof leaks:
07 E61 530Xi
Tell me about it i'm on HPFP #3 since Nov of last year... 
First question asked ? Are you using top tear gas?
Answer Yep , Shell ,Chev, 93 octane... I can only go with what is on the pump and can't take a mobile gas testing lab every time I fill up...
First question asked ? Are you using top tear gas?
Answer Yep , Shell ,Chev, 93 octane... I can only go with what is on the pump and can't take a mobile gas testing lab every time I fill up...
03-23-2009, 12:32 PM
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My Ride: 2006 550i, 1984 Mercedes Gelandewagen
Originally Posted by bigbadbull' post='824621' date='Mar 23 2009, 11:57 AM
Tell me about it i'm on HPFP #3 since Nov of last year... :(
First question asked ? Are you using top tear gas?
Answer Yep , Shell ,Chev, 93 octane... I can only go with what is on the pump and can't take a mobile gas testing lab every time I fill up...
First question asked ? Are you using top tear gas?
Answer Yep , Shell ,Chev, 93 octane... I can only go with what is on the pump and can't take a mobile gas testing lab every time I fill up...
The problem is that low sulfur tends to harm the fuel pump. It acts like a lubricant for the pump. The down side is that the higher the sulfur the higher the particulate the vehicle exhausts...
BTW, it's 'top tier gas.'