I just purchased a 30 foot 2003 Coachmen Mirada with a V-10 and 14,000 miles. I put in regular unleaded gas. I get some pinging or detonation on heavy grades. I know detonation can be harmful. Do I need to run better gas? A fuel additive? I thought the V-10 had detonation sensors that would retard the ignition if this occurred. What's the deal? Gas is expensive enough without going to the higher grades. Any suggestions?
Karl ???
Karl ???