I am the new owner of a 1996 Passat B4S with between 120,000 and 150,000 miles (depending on who you believe). Didn't get much service history with the car so I'm basically starting from scratch. I plan to replace the timing belt, tensionizer, serpentine and V-belts, water pump, vacuum hoses, etc. as outlined in the extremely informative how-to's on this web site. The one system that I didn't see much info on overhauling is the cooling system. This car still has what appears to be the G-11 coolant in it and the hoses don't seem to be on the verge of failing but nowhere near new either. I'm thinking that while the system is opened for the water pump replacement, it would be wise to replace the thermostat and as many of the hoses as possible. I'm planning to go back with the G-12++ coolant so a complete flush will be done before refilling. Does anyone have any first hand experience with what order the hoses and such should be replaced? Since I didn't see any how to's for this I'm assuming that the factory hoses hold-up pretty well? I need your advice based on your history with these cars.