Just wanted to know how truly hard flushing the coolant is in my 91 NSX. I've read the manual thoroughly and looks like a royal pain in the ass. I called Jones Acura (my local-most Acura dealership) to see which kidney I would need to sell to do this and they slammed a $570.00 bill on me just to flush the coolant! I'm sorry but there are many other things I'd rather spend on my NSX than pay that much to do something I'm pretty sure anybody who is mechanically inclined can do.