Mine is an '06 4.2 TDi - 2 x Z503

I have to admit my amazement that after a century of developing the internal combustion engine for automotive purposes & the '06 TDi being the end of the line of that engine's evolution that such poor consideration has been given to the ease of basic servicing. Whoever made the decision to make those filters so inaccessible should have been shot! And for any new owner .... it's impossible to see which filters you need until you remove the old ones which is a pia unless you live next door to the filter shop.

I like the idea of letting the motor drain overnight to reduce the amount of oil in the filters.

Cuppa