My 2000 Toyota Tacoma Prerunner 4 Cylinder has 54K. I've noticed no performance or transmission problems. When I checked the transmission fluid it was brown with no burned smell. Without doing the pan, I drained it and refilled. I drove it 20 minutes and rechecked it. It was still somewhat brown, so I drained and refilled again. It looks a little better but its still not right. The last time that I checked it, it was OK. I did pull a quarter-ton trailer with some firewood 120 miles in October; I use the trailer less than 5 times a year...usually lightly loaded. I read the posts on the subject and learned that when you change the fluid, you are only changing about a third of the fluid in the transmission; I should have dropped and cleaned the pan; I also should have checked and changed the fluid earlier. Today, I plan to change the filter if appropriate, clean the pan, and do the third fluid drain and refill. My question: If the pan and filter look OK, am I done, or should I have it flushed?
Tommy