I have a 2008 fleetwood Excursion with a rear radiator and a 360 hp ISC engine. There is a small leak that appears to be coming from the center of the engine below the front fly wheel or damper I thin...
Why did you cut a hole in the floor. All Fleetwoods, as well as most other mfrs., provide a removable panel that will give you access to the engine. In yours there should be one in the closet and one under the end of the bed.