I bought my 2007 Versa with 85,000 and now I have 120,000 miles. Is it recommended to have the Transmission fully serviced with Filter change, requiring the pan to be pulled. Or is it suffice to have the transmission fluid evacuated and replaced. AS well, are there any issues I may be facing in the future, and preventive maintenance recommended. I run Valvoline Synthetic and change oil every 4,000 - 5,000 miles.