I have a few questions about the impala transmission fluid change. Do you do this every 50,000 miles or is it ok to do it at 60,000 miles and should, I get a drain and fill or have the transmission flushed out. Dealership wants $200.00 to flush it out. I checked my fluid today it is kind of brown not red like it should be. Should, I have it changed now or wait until 60,000 miles. Car right now has 49,000 miles. no shifting problems right now runs great.