Power Steering fluid or ATF

[1967CorvetteCoupe]

I added power steering to my `69 Z28. I'm reading mixed opinions as to use regular power steering fluid or ATF fluid. Which is preferred and what is the capacity. This is a unit sold by one of the reproduction suppliers and fit as OEM without issues

[rich69rs]

From the ‘69 Chassis Service Manual section on Power Steering.  I use ATF in my ‘69 RS due to concern that over the counter ps fluid today might not be what GM had in mind back in the day.

Also simplified what fluids I needed to keep on hand - same as what goes in the Powerglide.

Richard

[1967CorvetteCoupe]

Do you know the capacity of the system?  Owner's manual doesn't indicate it.

[David K]

In the front of the AIM it will state which fluid. My 68 calls for ATF.

[rich69rs]

The front of the ‘69 AIM refers you to section N40 - Power Steering. 

AIM calls out ATF for small block. 

Capacity is shown a couple of pages earlier for L6 power steering - 0.285 gallons or about 1.14 quarts (2nd pic).

Richard