What type of power steering fluid should be used in a 2002 Citroen C5 2.2 HDI?
Doesn't the C5 have the full Citroen Hydraulic suspension
system? If so I'd expect the power steering system to be part of
that, so it isn't topped up separately but fed from the main system
for which you must use the genuine Citroen mineral-based stuff or a
trusted alternative, because any of the "Conventional" types will
ruin your fluid.