Certified Transmission recommends that our customers in the greater Gladstone area change their vehicle's transmission fluid every 3 years / 36,000 miles. The transmission technicians at Certified Transmission recommend bringing your vehicle to our Gladstone auto repair shop once a year for a transmission fluid change. If your vehicle is older, or you use it for hauling heavy loads and/or towing around the Gladstone area, it may be required more frequently. To determine if a fluid change is needed, Certified Transmission recommends an external diagnostic service. An external diagnostic service for a transmission includes checking the level and condition of your transmission fluid, a road test around Gladstone, and putting your car on a lift at our shop to check your external transmission controls and to keep your transmission, and your vehicle, performing properly. Use our online appointment form to schedule an appointment now!