I had my 1991 Taurus tranny power flushed for the first time when the car had 91,000 on the clock. 2,500 miles later the tranny blew and it cost me $2,400 to get it repaired. I traded the Taurus after it was repaired and got $1,900 trade in on the car. I'd say if you have that many miles on your car, DO NOT HAVE A POWER FLUSH TRANNY OIL CHANGE.!