Trans flush

There are two opinions I have gotten from transmisson rebuilding experts: One is that by this time the fluid additives are long ago used up and the seals have probably hardened and may leak if softened by new fluid. Also the fear is that new fluid may loosen and stir up debris and dirt laying low in the transmission. The other opinion is that of course you should flush the fluid and change the filter. i agree with this one but I see why some might be afraid to stir up problems. Myself, I'd get the flush if it were my vehicle. You don't say whether there's a problem with the transmisson. that would be a factor in my judgement.

Yes, it is a good idea to do this at 100,000 miles.