Modern transmissions are extremely sensitive to dirt and foreign matter. The only sure way to avoid expensive transmission problems and get the most value for your money is to always do a complete transmission service.

The secret is to follow this check list:

• Check your transmission fluid every month. It should stay full and red.
• Change the fluid and filter in your automatic transmission every 25,000 miles.
• In hot weather, if your car is overheating, put the heat on; it will use the heater water to help cool the engine. Check the transmission fluid, if it is discolored have it changed.
• In winter weather, if you're stuck on an ice patch or snow, don't rev your engine and spin your wheels or rock your car.
• If you have an overdrive transmission don't use it when there is ice or snow on the road.
• If you need to drive slowly, or slow down, it is preferable to downshift to the next lower gear.
• If you do not have ABS brakes, when you are on ice or snow and stopping, pump your brakes slowly. Do not push hard on the brake peddle.