The torx bolts can be a bit tight. Let the engine warm up, loosen slightly, not enough to allow coolant to escape.I install a clamp on the hose leading to the block from the over flow box and pull the box out of the mounts and lay it behind the engine. You will loose very little coolant this way.

I have a 95 850 when the car sets overnight it wont start on the first try but when you release the key and try again it will start and run good, until it warms up, and then it misses a little at first, then gets to the point of almost stalling no power etc. Ive eliminated the fuel pump, and fuel in...