Jim,

I don't think that it is the coolant. If coolant were leaking into the system the coolant level would be low and it's not.

Kevin,

I have a Kohler 20 KW generator. I have 4 - 14,000btu AC compressors that are running all of the time plus the other accessories on board, so I know that the gen has a full load on it.

I think Jon is right with the water vapor. I took the coach out this morning to fill up with diesel and the generator was not smoking! The temperature this morning is 87 with humidity of 66% and an 11 mph breeze. I will keep an eye on it. If we ever get any cool weather I watch it closely and see if in fact it is water vapor.


Thanks for the help.