Good evening dear Forumians, my Diva (V6 TDI, GP3, BJ 2011, 158 tkm) was hardly driven between Christmas and New Year and last week, when everyday life began, starting to harden both in cold and warm conditions (small noticeable bumps and quasi “think customers” incl. R and N). The previous owner received a flushing according to TE method in November 2019, 12 L Fuchs ATF 608 and ZF Filter Kit. Does anyone have a recommendation for me before a swap orgie starts? Thank you!