I normally use Type F in all my 727 and 904 applications.

I have however used TSC universal hydraulic fluid in one of my 727's. It was a beater car and my trans cooler line broke and its all I had on hand. This was a transmission that had been, and was continually beat on. The universal fluid worked perfect for the next 5 years. I then sold the car to a gentleman that pulled the motor and trans and dropped it into his 3/4 ton work van, and he drove it without incident for the next 6 years before he sold it. That van might still be going strong.

I dont think the 727 is concerned about using a specific fluid.