Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve symptoms of arthritis (osteoarthritis, rheumatoid arthritis, or juvenile arthritis) such as inflammation, swelling, stiffness, and joint pain.
1 The type of transmission fluid the car requires. One type of vehicle specific automatic transmission fluid can cost as much as $15 more per quart than another type of fluid.  The Shop; Labor rates at the transmission shop the customer chooses to have the transmission flushed.
1 AutoMD.com provides general how-to instructions and estimates the project as moderately difficult. 2  The main cost is the quarts of new transmission oil. 3  CostHelper readers report paying $40-$175 for do-it-yourself supplies, with an average of $90. Some experts recommend draining and refilling three times, so the fluid is completely changed. 2  Flushing a transmission with a pressurized machine can cost $125-$300 or more, and may include pushing a special cleaning compound through the system.