HWH slides are a SEALED system. If you have fluid, then the slide system is leaking. HOW big a leak, nobody knows. But, the HWH slide system ALWAYS has pressure on it regardless of extended or retracted. So, it will continue to leak unless you find and fix the leak. To check fluid level on a HWH combo Jack and slide--- retract the jacks and extend the slides. Then check the fluid and top off with Dextron 3 trans fluid. To find the reservoir/pump is easy. Have someone activate the jacks while you walk around the RV. You will hear the pump running and the reservoir is connected to the pump. Follow the noise to find the pump. The longer you take to find the leak and fix, the more mess you will have. Doug
