I would forgo the VAPS until changed the fluid and install Mobil 1 ATF or Amsoil ATF. Might wanna check for leaks before hand and get replacement hoses. My power steering fluid filter mount tubes were leaking. I ran my car with low pressure due to new leaks for over 700 miles. I for sure had caused the pump some hardship, all I did was put the new oil mentioned above, and my pump is still going strong after another 32,000 miles. Don't worry, I have been reading on how to change the pump...
If you read my posts, you will note a battery may test good, I was with the technician and watched the tests - all good, and it took out a second alternator (regulator) - they had 5 technicians doing the tests from the Ford book, took them 2 hours to decide it was the alternator. The noob technicians aren't taught about regulators, glad I paid for all that training.
I buy my own regulators and install them into the alternator. I had a Dixie rebuilt alt and it came with a sheet showing a good test, but the regulator failed on me. When i looked at the regulator, it looked old and had a dent on the fins.
Trust the red battery light in the dash, if it ever glows, first replace the battery and regulator and you will be good to go.