Now you're ready to fill the engine with oil. Unscrew the oil fill cap and insert your funnel. I like to buy the 5-quart containers of oil (cheaper) but if you're using single quarts that's fine, too.
Check your owner's manual to find out how much oil your engine holds. Pour a little more than 3/4 that amount into the engine. For example, if your car holds 4 quarts of oil, add 3 1/2.
If you're using a 5-quart container of oil, there is a guide on the side that shows how much oil you've put in.
You're not finished yet so don't drive off.