The timing chain normally needs to be replaced between 80,000 and 120,000 miles unless there is a specific problem. Issues with the chain are common in higher mileage vehicles. If driving an older vehicle, or one with close to 100,000 miles, it is recommended to look for symptoms of the timing chain going bad or failing.
Signs a timing chain needs to be replaced include:
Older, pre-VVT applications will generate engine rattle
Using the wrong oil is a common symptom that causes a vehicle’s timing chain to wear even quicker. The wrong oil can cause extra load on the chain and the engine will not be properly lubricated.
Each vehicle manufacturer specifies a minimum API oil service rating, a recommended viscosity, and often a specific oil.
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