We have a 2013 Chevy Volt. We love it. However the check engine light came on recently. We took it in to the Chevy dealer and they gave us the bad news that there are signs of "engine and cylinder head internal damage/leak". During testing they found there is "excessive white smoke from the exhaust on start up, engine runs rough, and there is rust pitting on cam shaft." The mechanic said this is a common problem with this generation of Volts, likely caused by the original owners not changing the oil frequently enough and/or not using synthetic oil. So the question is is there anything we can do about it to keep it running as long as possible? Should we try an engine flush? Change the oil more frequently? Is there any way to know if we have a few months or a few years left? Given high gas prices and the high price of used cars, we'd really prefer to keep driving this great vehicle, but also don't want it to fail on us. (The relevant check engine code was P2181-00).