Just do a quick pressure test on the cooling systems (search cooling system pressure testing) and this will expose most system failures.

Fear is nothing more than the unknown. Nothing is a Catastrophe. Its just a few bolts and time...

There are many posters have been there and done that, so you are not alone. Cooling system refresh is really not that bad.

__________________

2005 X5 4.8IS
The Blue ones are always FASTER....

Current Garage:
2005 X5 4.8is
2002 M5 TiSilver
2003 525iT
1998 528i
Former Garage Stable Highlights
2004 325XiT Sport
1973 De Tomaso Pantera, L Model
1970 Dodge Challenger T/A 4 sp Alpine White
1970 Dodge Challenger T/A 4 sp GoManGo Green
1971 Dart Sport, “Dart Light” package
1969 Road Runner 383
1968 Ply Barracuda 340S FB Sea-foam Green