You are going to have to thoroughly clean the entire area, dry and inspect for leak ater several hour intervals to find the point of the leak. You could have a bad gasket between the pump and reservoir or it could be between pump motor and pump. Once you find the oil leak you can find out if it is an easy or more complex repair. Good luck and keep us posted.
Mike, RVIA & RVSA Certified Master RV Technician
Amy, Dr. Assistant - Roxie & Mei Ling, four legs each
2000 Gulf Stream Scenic Cruiser 450 hp & 1330# torque
06 Saturn Vue, 06 Chevy Z71 4x4 & 2014 Corvette Z51 M7