I have a 2010 29' V10 with 10,000 miles on it. It seemed to be using oil, so I took it to the dealer. At the last oil change, I mentioned this to them. He put a mark on the dip stick and told me to co...
Excessive oil consumption in the V10 is nearly always due to a bad PVC valve. It's a $3 part, so replacing it is probably cheaper than driving to the dealer. It is easy to reach from the inside (top of the right valve cover).
Some oil consumption is normal (it is always working hard in a motorhome after all) but that much is excessive for a low mile V10.