Transmission fluid should be emptied and replaced at the given intervals, where the process can only be implemented after the engine has cooled properly down because the fluid is hot even after the engine has driven. Purchase the required transmission fluid and new filter beforehand, the tools required, including jackstands to hold the vehicle, a drain pan, newspapers, and clean rags. Lift the car with the jackstands and place a drain pan under the vehicle, loosen the front and side pan mounting bolts. To drain the fluid, loosen the rear pan bolts about four turns, and take care to loosen the transmission pan with a screwdriver to allow fluid to be free to drain by letting the pan dangle. Take out the rest of the bolts, pan and gasket and clean the gasket surface of the transmission so that all the trace of the old gasket and the sealant is removed. Empty the transmission pan, wipe it out with solvent, and dry it with compressed air, taking care to scrape out all metal filings of the magnet. To attain electronically controlled models, the filter in the mount within the transmission is removed by removing the bolts and turning the fluid filter out of the bracket. Install a new filter by screwing the bolts firmly, and the gasket surface of the transmission pan is clean and then a new gasket can be installed. Slide the pan against the transmission and add the bolts, connecting each one with a certain rotation to the right torque and not overtighten. Reduce the car and pour the required fluid via the filler tube. The engine should be run on fast idle, not raced, this time with transmission in Park and the parking brake on and the gear selector in each range and back to Park, checking the fluid level. Lastly, during the initial few trips check under the vehicle to check on leaks.