As someone mention, check you antifreeze reservoir tank that sits on top of the radiator. I have a Cat C7, 350 HP and mine cracked in Billings, MT last summer. Actually it was leaking before that, but it was in Billings that I figured it out. The plastic in the original tanks wasn't well suited for the heat. If you have the tank in the upper right corner (looking at the radiator from the rear of the MH), and there are any spider cracks in it at all, I'd change it if you're at home. The tank is about $150, but you'll save 2 - 3 hours a labor at about $125 and hour. It's easy to do when you have something to drain antifreeze into.
If the antifreeze went into the engine or transmission, the oils will be frothy and a sort of chocolate mouse color. It the oil looks like good oil, I wouldn't worry about the oil and look else where.
Let us know what you find.
Bill