If your car has an oil leak, itÒ€ℒs essential to repair it right awayÒ€luckily, there are a few easy fixes you can do at home for cheap. The first step is to locate where the oil is leaking from in your engine. Then you can tighten any loose bolts or replace a few bÒ€¦ place a piece of cardboard under the engine to pinpoint active leaks. to find the general area where a leak is coming from, place a large piece of cardboard under the engine block and leave it overnight.