Q: How to drain and replace transmission fluid and Automatic Transmission Filter in a Dodge Charger?
A: At specified time intervals, drain and replace the transmission fluid after the vehicle has completely cooled down. Before starting, purchase the recommended transmission fluid and a new filter. Additionally, gather tools such as jack stands, a drain pan, newspapers, and clean rags. Raise and support the vehicle on jack stands. Place a drain pan and remove the front and side transmission pan mounting bolts. Loosen the rear pan bolts and carefully pry the transmission pan loose with a screwdriver to allow the fluid to drain. Remove the remaining bolts, pan, and gasket, and clean the gasket surface of the transmission. Drain the fluid from the pan, clean it with solvent, and dry it with compressed air. Remove the filter and seal, then install a new filter seal and the new filter. Ensure the gasket surface on the transmission pan is clean. Install a new gasket if working on a NAG1 transmission, or clean the pan and transmission surfaces with lacquer thinner and apply ATF-resistant RTV sealant if working on a 42LE transmission. Bolt the pan in place and tighten the bolts gradually until the final torque figure is reached. Lower the vehicle and add the specified amount of automatic transmission fluid through the filler tube. Check for leaks during the first few trips. To check the fluid level, start the engine with the parking brake set and move the shift lever through all gear ranges, ending in Neutral. Wait for at least 2 minutes. With the transmission at normal operating temperature, insert the dipstick into the filler tube and note the fluid level. Use a scan tool to check the temperature of the fluid and determine the correct fluid level using the temperature and the height of the fluid on the dipstick. If additional fluid is required, add it directly into the tube using a funnel and check the level until it's correct. Finally, install the dipstick tube cap.