Power Steering Fluid - Do it Right

Volkswagen specifies mineral fluid for the power steering system.

Completely different from generic 'Power Steering Fluid' and ATF.

Here you can see the correct 11S Synthetic Fluid in green and dirty ATF in red.

This customer brought in the car with a loud whine. Turns out, someone added ATF to his system and caused the pump to seize up. See how thick that fluid is?

 ATF on the left, CHF 11S (correct fluid) on the right

ATF on the left, CHF 11S (correct fluid) on the right