How hard is it to stop oil from leaking?
Most oil leaks are connected in some fashion to the next FAQ subject, o-rings. The oil pan gasket and retaining screws are one of only two other leak sources of any frequency. The other is covered in “oil problems”, which explains things that cause and result from oil leaks, and some fixes. Once you’ve located the leak source, the shop manual will explain well enough how to replace those that aren’t self-evident or covered in “oil problems”.