Engine oil change interval

[windowphobe]

YES. Answer that. How often do you change your ATF?

Every 30-40k, or the moment the stuff begins to look or smell funny, whichever comes first. (I am currently experimenting with a synthetic.)

[BBatesokc]

The father of my best friend in school owned the AAMCO franchise near downtown at that time. He told us to never, ever open up an automatic transmission unless it failed. I've never changed tranny fluid or filters and I've put well over 150,000 miles on a handful of cars and trucks without a tranny problem. Most pulled boats or other trailers regularly.

I agree..... My wife had a Mustang when I met her that had over 230,000 miles and never had anything but the oil and air filter changed. My vehicles have seen over 150,000 miles and I've never changed the ATF and wouldn't going forward.