1.9tdi fuel filter water drain DIN EN 590

[dylan8]

Have you used a LIqui Moly Diesel Purge. Its really good for the engine.
I usually use Morey's smoke killer and it works very well.
If worried about water sedimentation which is more of an issue in UK due to the weather, you could just pop the tank open at the Fuel pump and clean up the tank.
I did that on my 2008 Passat and the fuel was black- Usually use BP ultimate/Vortex and Morey's, 2nd Owner, don't know what was being used by the person before me.

I havent tried that. I did look at it, but that ease of the Nulon in tank stuff suited at the time.
I was concerned about what the previous owners may or may not have done to it too. Car had been trashed before I got it and maintenance was unknown the last few years. It then sat in my possession for 2 years or so (was worried this might attract water/algae to the system).
Fuel appears clean now so I'm happy its had a good shake up and clean out.

yeah wonder what caused it to be black... maybe they tried to run on bio fuel?