Have a 92 Cherokee @ 95k, wifes car, 90 olds (3800eng) @ 135k, had both flushed & filters & fluid replaced. We run can of B&G tran. cleaner prior to complete flushing, draining changing filters and buttoning them back up. Had to re-tork trn. pan bolts at 5k. Not another thing been a problem. Have 110k on the Jeep, 156k on the olds. A brand new flushing machine was used & you should have seen the black stuff coming out in the clear recovery line. For what ever its worth. Cost $150.00 both cars!