Transmission fluid evolution..
My old burb was designed for Dex III. I have of course been using Dex-6 on the occasional drain and fill. I went to the store to buy some Dex 6 the other day and all they had was a synthetic Dex-6/M...
Forum Discussion
Lubricants continue to improve on regular basis. It is one of the reasons cars go 200,000 miles now and often much longer.
