I have a 94' 540i with some transmission issues. It acts like it needs some oil but found out its a sealed transmission. Slow to go until it warms up then goes ok. No clunking, no bad noises, no error messages from computer. I have been told to go see Economy Transmissions. It has a A5S 560Z automatic transmission with the 4.0 liter engine. Any Boise contacts anyone can suggest?