Hi,
Thanks for the replies!
We changed the oil four months ago, for the reason that with the previous oil we had the same problem with the filter blockage.
There is a tranparant high molecular deposite all over the filter element and that is the reason why we have to change the filter every 1 or 2 weeks. As we found high levels of silicon with the filteranlysis we pressume that that is the composition of the deposite.
Kind regards