almost all automatics require the engine to be running when the wheels are turning, because there is nothing pumping fluid through the system. Ask someone who has an RV and tows a car, it only takes 1 fried tranny to learn that lesson. A manual trans is designed to pickup and fling fluid whenever the axles are turning, so thats not a problem.
You will be less likely to cause problems by shifting into neutral when you want to coast (leaving the engine running) and then blip the throttle as you shift back into drive so that you dont shock the trans through the torque converter.
If you really need to EOC, find that $500 beater that is already a manual trans. Then you have no excuse not to gut it and modify it like basjoo did
