Make Sure The Upper Radiator Hose Hasn’t Worn Through By Rubbing On The Battery Tray, A Common 98 Windstar Problem.
Ford revised the hose by including a protective sleeve on the replacement hose or a sleeve that goes over the existing hose. Your 13 to 14 year-old van may or may not have the sleeve.
This doesn’t explain the unusually high oil level, though, just the coolant on the engine and ground and low coolant.
CSA