Hydraulic fluid-pentosin CHF-11S

While I had my engine compartment open today on my MY00 base, I checked the power steering fluid level dipstick and found that it did not show anything on the dipstick. Can anyone tell me a comparable fluid to the pentosin product that I could pick up locally at autozone or O/reillys today to bring up the level. The steering is working fine, I just want to bring the level up to where it should be.

Joe