Do you have a large amount of oil on your driveway? Can’t seem to find where all that oil is coming from? There are a few ways to find where your vehicle is leaking all that sludge, and take steps to stop it.
First thing you’ll want to do is degrease the engine block. Clean up all oil under the engine and around the valve covers. The oil pan should also be cleaned to get a good sense of where the leak is starting at. Start the engine and lay out a brown box. You may not see the leak for a few minutes. Be patient, the leak may not be seen if it is a small slow one.
Check to see that the oil filter is properly installed and tight. Check the oil pan and the drain bolts. A leak will ooze out if they are not tightened. One of the most common places for an oil leak is the valve cover gasket. This gasket is between the valve cover and the engine block. It can become worn and cracked over the years. Wipe it clean, start your engine, and check back in a few minutes. If the area has produced oil it may need adjustment with a torque wrench.
If the leak is still not found, check the head gasket. This is where the engine heads sit onto a block. If you find the leak here it could be because of a bad pcv or a hose that has a kink in it. Wipe them down and see if any oil comes out. The last place to check is the head gasket itself. This will be the most costly repair and should be inspected by a professional. Gerber Collision and Glass recommend wearing the proper safety equipment when looking for the source of your leak. Safety glasses are a must. If you are ever in doubt about checking for an oil leak, please have a certified mechanic help guide you through it.