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  #1  
Old 08-14-2019, 05:35 AM
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Fuel Separation Systems

Are fuel separation systems like Fass Fuel System a must install in diesel vehicles like my 2008 Mercedes-Benz M-Class ML 320 CDI? Will it do anything to improve my vehicle's performane?
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  #2  
Old 08-14-2019, 06:26 AM
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any water separator is a good thing,however make sure enough fuel pressure
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Old 08-14-2019, 10:23 AM
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Fuel Air Separation System

Your fuel system is pressurized from the tank to the injectors. No suction, no air infiltration, no need.
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2012 S350 BlueTEC 4Matic
2007 ML 320 CDI
2007 Leisure Travel Serenity
2006 Sprinter 432k
2005 E320 CDI
1998 SLK230 (teal)
1998 SLK230 (silver)
1996 E300D 99k, 30k on WVO
Previous:
1983 240D, on WVO
1982 300D, on WVO
1983 300CD, on WVO
1986 300SDL 237k, 25k on WVO (Deerslayer)
1991 350SDL 249k, 56k on WVO - Retired to a car spa in Phoenix
1983 380 SEC w/603 diesel, 8k on WVO
1996 E300D 351k, 177k on WVO

2007 ML320 CDI .. / 2005 E320 CDI .../ 1998 SLK 230 .../ 1991 Daihatsu Rocky
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  #4  
Old 08-14-2019, 04:20 PM
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Not a scam as it includes a water separator. Beyond that I really have my doubts.

Low price to get you in the door but then you have to buy their replacement fuel filter.

The way of the human condition. If you expect to see improvement you can imagine it. I can think of no way this can increase fuel milage unless your old filter is obstructed. I base this on many people claiming a 1-2 mile improvement just by changing out an old fuel filter.
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  #5  
Old 08-16-2019, 05:44 AM
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A Cat 1R-0750 (or equivalent large,r finer filter) would be the only worthwhile filter mod IMO, and that's nothing to do with performance, only change intervals and better filtration.
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  #6  
Old 08-18-2019, 10:49 PM
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These ain't Dodge Cummins with their horribly under sized and poorly designed fuel systems feeding a $1,000 VP44 before the problems with the VP were fixed.
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