My truck is fast approaching 60K miles and I am thinking about changing the ATF. My manual recommends changing it every 30K and that is what I have done. I checked it this afternoon and the level was okay (as expected) and it was still a nice red color and didn't smell bad. Should I go ahead and change it? Also, I'm a firm believer in synthetic motor oils; should I go synthetic in the tranny as well? Anything I should stay away from? You know, like how many people wouldn't go near a Fram oil filter.