2003 Buick LeSabre replace fuel filter

Dear Doctor: My 2003 Buick LeSabre is a great car. Is it necessary to replace the fuel filter every 15,000 miles? My owner’s manual does not make reference to doing this. Tony

Dear Tony: Car manufacturers refer to “mileage service intervals” with recommended part replacement and service inspections. Some vehicles have a Single Rail Fuel system with the fuel filter located in the fuel tank. Other cars have a Dual Rail Fuel system that allows more fuel to flow through the filter. The unused fuel goes back into the fuel tank. Vehicles that have an external fuel filter should be changed every two years on average. — Junior Damato, Motor Matters

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