Tom,
It has been a while. For oil I believe it is between 4 and 5 quarts. I may be low.
To tighten the top nut on Tokico struts, I used a small set of vice grips with with the slightly rounded clamps. I cut a small piece of the rubber liner that is used in pools and garden ponds. Between the liner and the vice grips I was able to stop the shaft from spinning and torque the nut. Since I use adjustable camber plates, I did this procedure with the assembly outside of the car.

All the best.