The 3208 is Cat's disposable diesel. They run very well throughout their initial build to overhaul duty cycle. Once that has been reached, they don't seem to run well ever again, even after a full rebuild. When I used to work for Wyoming Express (they no longer exist now), we had one in an older GMC truck used for local pickup and delivery. Everybody hated it, as it couldn't get out of its own way, and even the company gave up on the truck and sold it after having that engine completely gone through three times to get it running right.

If it's a young engine, with good records, go for it. Otherwise, look for an RV a 3116 or 3126 inline 6 - a MUCH better engine.