My system uses Mercron III power steering fluid. Yours probably uses the same, but it should say on the reservoir or cap or the user manual (as poor as they are).
2004 Tiffin Allegro 27.5 ft. P32 18,000 lb GVW. 8.1 liter. Workhorse chassis built May 2002. 24,500 miles. 2012 Jeep Liberty Toad. RVi2 brake unit.