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In 2010, the Volvo XC70 is equipped with a timing chain instead of a timing belt. Unlike belts that need replacement every 60,000 to 100,000 miles, the timing chain typically does not require replacement. Chains may only need replacing in cases of total failure, which is rare. Belts are exposed outside the engine, while chains are inside the engine and benefit from engine oil lubrication, which is why belts need replacing more often. Opting for a timing chain over a belt seems like a wise choice to avoid the hassle of frequent replacements.
The Volvo XC70 from 2010 is equipped with a timing chain.