I drive a lot on the highway a lot, so I spend a lot of time at about 80 or 90 mph. I find my rpms at or above 3500 when I'm doing that, which has always bothered me (here comes the embarrassing part) because I was wishing my car had overdrive. Turns out, I do have overdrive! I have never been past third gear, however, which makes me more upset than you can know. I know my transmission is slowly failing after 160kms, but I can't believe my overdrive would just go out of function! What do I have to do to get from third to fourth?