Had a problem with my X making a loud whining and clunking noise coming from trans when coasting from high speed. Adjusted the bands with no luck. Dropped the pan and lord and behold what did I find, a partially clogged filter full of some form of wax material. Mind you I just changed the filter 6k miles ago and exchanged 10 qts of Mobile 1 ATF then did what I should never had done, added 1 bottle of Lucas ATF additive. I ended up removing the valve body and all the small valves to clean the bores of that nasty wax material. Ended up replacing the EPC, TCC, and four shift solenoids as they were clogged as well. After putting everything back together with new filter and 10 qts of SYN ATF at a cost of around $300, she runs like a charm. Whining and clunk are now gone. Never again will I use additives in my X again or any of my other vehicles.