My sisters husband is a retired Ford transmission engineer. He says trans fluid has chemicals in it that help the transmission work properly. The chemicals can lose their effectiveness at 75k miles. Had a car that was acting weird, oscillating on acceleration. replaced the fluid about 75k...
I have a 2017 2wd Limited. It towed my 2700lb boat fine last year, now it doesn't want to go over 65 without kicking out of overdive or downshifting into 4th gear. What gives?
