I have a Nissan Micra/March 1.3 CVT-N and i would like to renew the ATF myself as per the manufacturers specified service interval of every 27,000 miles.The service manual describes the procedure which includes letting the Engine idle for 5 mins after re filling with the correct fluid,and then with the car on axle stands,and front wheels off the ground,select D and slowly accelerate to 30mph,release throttle and repeat two more times.Is this procedure of accelerating the car to 30mph off the ground really necessary? could i just drive the car up to the indicated 30mph,then slow down and repeat two more times? What would people advise i should do.The car is my mother's and she wants to keep it,so i don't want to do anything that would hurt the transmission.