Hey All, I have a 2002 Ford Ranger with automatic transmission and 125,000 miles on it. As far as I know, the transmission fluid has never been changed. I was wondering if I should go ahead and change it, or if I'd be doing more harm than good at this point? I was thinking of maybe doing one of the following: (1) Doing a drain and fill with maybe a transmission filter change. (2) Siphoning and replacing maybe 1 quart of fluid every 1,000 miles or so from the dipstick hole? Any recommendations would be really appreciated. Here's a photo of what the current fluid looks like: Thanks in advance!