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Do cars with 50,000+ miles have timing-chain problems?

To prevent engine damage automobiles with with rubber timing belts should have them replaced at 50,000 miles. If your car has a timing chain then it can last considerably longer because chains are stronger - partly because they are lubricated with oil. Please keep in mind thought that timing chains can still break. A broken timing chain can destroy an entire engine and leave you with a large auto repair bill. Normally timing chains should be replaced every 100,000 miles, though some cars require an earlier replacement. Preventative maintenance will result in a better-running car and lower repair bills.