Checking the tightness of connections

The presence of puddles on the garage floor or engine, or obvious moisture under the hood or on the underside of the vehicle, suggests a leak that needs to be found and repaired immediately. It can sometimes be difficult to locate a leak, especially if the engine compartment is heavily soiled. An oil or fluid leak can also be blown back under the vehicle, giving a false impression of where the leak is.

oil pan



Engine oil may leak from the drain plug.

Oil from the filter



Oil may seep through the base of the oil filter.

Gearbox oil



Oil can seep through the seals at the inner ends of the drive shafts.

Antifreeze



Leaking antifreeze often leaves a clear coating.

Brake fluid



Leaks in the wheels can only be from brake fluid.

Power Steering Fluid



Power steering fluid may be leaking from pipe connections on the control shelf.