These are 10 basic step-by-step DIY car repairs you should know. They will save you money, time and stress. \t Changing the Oil \tDrain the oil by removing the oil drain plug \tUnscrew the oil filter and empty it \tPutting the oil filter and drain plug back \tRemove the oil filler hole cap \tPour in fresh oil. \t Changing the Flat Tire \tLoosen the lug nuts (with a wrench) \tUse a jack stand to lift the car off the ground \tRemove the lug nuts (and subsequently the tire) \tPlace the spare tire on \tWrench the lug nuts back on \tLower the car \tMake sure the lug nuts are tight. \t Changing Spark Plugs \tLocate your spark plugs \tRemove the spark plug wire \tRemove the faulty spark plug, \tInsert the new spark plug in its place \tPut the wire back. \t Removing the Scratches from Paint determine the depth of the scratch \tlightly sanding the scratch \tClean the area \tApply rubbing compound \tPolish the area with the rubbing compound \tWash the area \tWax the area to seal the repair \t Changing a car battery \tRemove any covers from the battery \tDisconnect the negative cables \tMove the clamp away from the battery post \tDo the same for the positive cable clamp \tRemove all screws \tReplace the old battery with the new one \tReconnect the cable clamps. Make sure you label the cables before you remove them. \t Replacing a Headlght or taillight \tRemove the screws connecting the headlight frame to the bracket \tDisconnect the electrical connector \tRemove the faulty bulb \tReplace it with a new one \tPlug the connector back on \tReplace the frame. Sometimes only your frame might be broken, which can be just as hazardous. You can change it following the same procedure. \t Replacing the Wipers \tLift the wiper arm away from the windshield \tDepress the small tab that allows the wiper blade to be pulled off \tLine up the new wiper blade with the arm, and pushing it in tightly. \t Replacing Air Filters \tOpen the hood \tLocate the air filter unit \tRemove the air filter cover \tTake the air filter out and cleaning the air filter housing \tInsert a new filter \tReplace the cover. You\u2019re done! Make sure you change your filter once every 30,000 miles, or approximately once every year. \t Changing the Brake Pads Loosening the lug nuts of the wheels \tJack the car up \tRemove the wheels \tRemove the slider bolts \tRemove the older brake pads and replacethem with new ones \tPut the slider bolts and the wheels back on securely. You should be particularly careful if you\u2019re using replica wheel \t Jumpstarting a Car \tTake your jumper cables out \tPut both vehicles in neutral and shut the ignition off. Now, attach one of the red clips to the positive terminal of your battery and the other to the positive terminal of the battery in the other car (the one that will start). \tAttach one of the black clips to the negative terminal of the battery in the other car. \tAttach the other end to an unpainted metal surface. Now try to start your vehicle. You\u2019re done!