S-Type (X200) V8-4.2L (2005)
1. Replace the power steering reservoir only if any of the following conditions apply:
Reservoir bottle housing is split
Reservoir bottle port is crushed
Fluid is grossly contaminated with particulate matter, witch may or may not result
in a loss of function from the power steering system.
2. If particulate contamination is observed, but the steering system functions
normally, drain the fluid from the system, replace the reservoir, and flush the steering system completely with fresh fluid.