what are people's thoughts on power-steering fluids? Is it critical to use Ford spec, or are there other cheaper/better lubes out there? Some of the ionic or nano-additives can turn basic fluids into better performance ones for example.
I've just changed mine - found it impossible to find one which meets the Ford specs so bought 2 litres of this: https://www.carparts4less.co.uk/p/tripl ... -522776292 It's full synthetic and reasonably cheap. Got to be better than the dirty stuff I took out. Seems to work so far.