Yes, our power steering pumps calls for mercon V or compatible spec Transmission fluids, like Mobil 1, for example. if you have used nothing but genetic brand power steering fluid during fluid changes, that can potentially be your problem. My suggesting would be to drain your power steering system completely, refill with mercon V, and see if that fixes the problem. I believe the system only contains about 2 quarts of fluid so it won't be very expensive.