when my horsebox is parked up for a length of time there is a small damp patch on the floor but no drips, levels ok.Brooksie asked if air con...it does not have air con.....its def not oil......please tell me its not major
Need more info, Is it at the front of the engine,back or near-side or off-side?? If it is at the front possible water pump slight leak when standing still!
Pos that the area under the horse box was damp when you parked up then with the box on top of the area the wind or whatever could not dry out the area.