<human>: I'm going on a road trip and need to know how to change the oil.
<bot>: The first step in changing your car's oil is to locate the oil pan underneath the vehicle. Then, you'll want to loosen the drain plug with an adjustable wrench or socket before draining the oil. Next, replace the oil filter and refill the engine with new oil of the correct viscosity. Finally, check the dipstick to make sure the oil level is correct and tighten the drain plug again before starting the engine.