I'm interested in adding a water-separator to my E300.

Reason: 1. From all I've read over the part few years seems to point that diesel fuel likes/attracts water, hence there should be a system to separate this water from the fuel supply.... Also from what I've read the full flow filter on these OM606's may separate a small amount of water (be careful if you cross the filter separation threshold :-) )

2. (non-scientific assumption, rather more-so an observation) I've come to notice that when the engine starts nailing randomly nailing during highway travel and then I look at the fuel cap from the fuel tank, I can see condensation that has accumulated. Ex. this past Monday night I embarked upon a 200 mile journey (rount-trip). On the way up approx. 30 miles up I stopped at a local Hess and filled with approx. 10 gallons of their "juice". When I opened the cap there was no noticeable condensation on the cap. On my return trip I could hear the engine randomly nailing when under moderate load. Hearing that nailing can make you a little uneasy, especially at night. I pulled into a rest area and added the remaining bottle of my Redline Diesel Catalyst to the tank. When I reviewed the fuel cap, I saw a considerable amount of condensation (water droplets) all over the cap. The evening was rather brisk I might add, ambient air tmep was in the 40-50's. Proceeded with my journey and my nailing dissapeared.

Expection(s): I would like to locate a water separator to add to my fuel system with a main purpose to separate the water from the fuel. In addition I don't want a filtration unit that will add a lot of resistance to the fuel system and cause premature failure, leaving my stranded somewhere. I've read the TDI Forum and a thread by another member adding the Stanadyne FM100 unit...


Thoughts guys?

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'97 E300
'99 E300