I need to top off my PS fluid but not sure what to use. My car ('67 327/350) was born with manual steering. PS was added to the car sometime within the past 5-6 years but I don't know who made it (could even be an original GM unit but I don't know).
My question is, what type of PS fluid should I use? Does it make a difference?
Not so fast - has your car been changed over to DOT 5 Silicon fluid, as is common in many restorations? DOT 3 and DOT 5 do not mix, so don't confuse the two.
I have no idea, Jeff. The PB were also added to the car within the past 5 to 6 years. Is there a way to tell what's in there now? I took a small sample out and put it on a white dish. Looks like it separates into a clear component and a tannish-colored component.
Thanks Jeff (and JohnZ)! Turns out it is DOT 3 so I'm good to go with that. Appreciate the help. I learned something today .
If the brake fluid is dark as you stated above, and appeared to separate into two phases, I would condsider doing a complete system flush sometime in the near future. The DOT 3 fluid should be clear and clean with no debris or sediment. You should be able to see down to the bottom of the master cylinder. It turns dark with time, heat, and moisture.
Larry - Thanks for the information. When I first took the fluid out of the car, it separated into brownish color on the bottom with a thin layer of clear on the top. After adding water and shaking the bottle, it looks like this (definitely not clear):