Hi all,I have a standard 2004 L322 HSE with 140,000 miles on it. I am inquiring to see if you recommend changing the transmission fluid at this milage or leave it. I am conflicted because I know it needs it BUT, I don't want to disturb the sediment in the current fluid although I also want to prolong the life of the vehicle and perform the needed services. Any recommendations? I essentially don't want the trans to slip if I did change the fluid, causing more harm than good. Any personal experience / recommendations servicing the fluid at this high mileage? Thank you.