I'm pretty sure that your engine has a timing chain not a belt. In which case it is important to change the engine oil and oil filter regularly. That way the oil feed to the chain should not get blocked and the chain should last a long time. Neglect the oil and filter changes and you're likely to get premature wear or even a broken cam-chain.
Change the oil every 9000 miles or annually, whichever comes sooner.
ChicksFan, July 2013
