A big coach with a big engine will get you better fuel mileage than a big coach with a small engine. I'm over 8mpg consistently with mine @ 1500 rpm even over the Rocky Mountains. But, we avoid interstates.
@ Mr. Mark, funny you mention the turn signal clicker...I had to zip tie mine as it kept bouncing loose....:).
@ OP...I would have a local Cummins dealer pull the codes on your engine. Many will do it at no charge. This will tell you a whole bunch about your engine. The codes are stored until someone deletes them. I had mine pulled this year and it was 12 pages long. Good info. Have the engine and genset serviced if you have no records from the previous owner.
Go through the coach with a bag of zip ties and add one every 12" or so. This will keep the wires from bouncing around and breaking. Easy preventative maintenance.
Since it's an 08 a call to Monaco with the VIN will get you a copy of the build sheet from when it was mfg. This build sheet will also have all the serial and model numbers of the things in the coach. Good reference material.
Grab a TPMS to monitor those tires. Since you don't know how they were treated, IMHO, this would be one of the first things I'd get. (dealer option maybe??)
Good luck, you'll love that coach......Dennis
