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      12-03-2012, 07:38 PM   #8
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Drives: 335d
Join Date: Aug 2010
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Originally Posted by FormerRotor View Post
I have only attempted seconds of research beyond reading everyone's posts, but the part for our fuel filter seems to be labelled "fuel strainer with heating", which leads me to believe that it does not somehow "dry" the fuel. Anyone know?
The heater is for cold fuel, definitely not for drying the fuel. From "BMW Advanced Diesel Technology" (factory handbook):

The fuel heater only works with the ignition switched on and when
both of the following conditions are fulfilled:
Temperature drops below a defined value
A defined fuel delivery pressure is exceeded due to cold,
viscous fuel.
So, as can be seen, no mention of "Drying" but definitely a mention of cold fuel.