Got a hole in a hydraulic hose. Not far from the house, drove to the shop. Went to town got line & replaced. Took the hyd fill cap off went in the shop to get hydro fluid & wife called me for dinner. After dinner we had a heavy rain storm for 30 min. That’s when I realized I left the cap off. Tractor hasn’t been started so I’m thinking take out the drain plugs & let it finish draining. Pour some cheap sacrificial hyd fluid in with drains still out. Let that drain then fill with super UDT. Any thoughts or suggestions are greatly appreciated.