Benchmark Transmission recommends changing your vehicle's transmission fluid every 30 to 40,000miles. Our technicians recommend you bring your vehicle to our Newark transmission service and repair shop once a year for a fluid change. If your vehicle is older, or you use it for hauling heavy loads and/or towing, it may be required more frequently. To determine if a fluid change is needed, Benchmark Transmission recommends an external diagnostic service. This includes checking the level and condition of your transmission fluid, a road test, and putting your car on a lift at our Newark shop, Middletown shop, Claymont shop to check your external transmission controls and to keep your transmission, and your vehicle, performing properly. Use our online appoinment form to schedule an appointment now!