PRI show, bought the Quick Jack

I used dexron fluid. Follow the directions. You put some in, run the jacks up alittle and put more in. After you use them once and they go down, some fluid might come out of the vent. Make sure you check the pipe plugs in the end of cylinders. Make sure they're all the way down if disconnecting the hoses or the pressure is off the cylinders.
You'll love them. Did you get the 110 v?