My brother has aquired an E39 530i with about 110K miles on it and he
wanted to get the auto transmission serviced at the dealer. They told him he
had a lifetime fluid in the trans and it never needs changing.
He looked on Roadfly and has received differing opinons as to change the
fluid and filter. Some opinions say leave well enough alone and others say
change the fluid.
What is the general consensus on this forum for service recommendations?