Regardless of what you may have been told about the maintenance history, change the oil, oil filter, air filter. Run it for an hour or so under load. 278 hours isnโt a lot of time but itโs been used or exercised from time to time.
Tom Wilds
Blythewood, SC
2016 Newmar Baystar Sport 3004
2015 Jeep Wrangler 2dr HT