What's An Oil Pan in an Engine?

Oil pans are detachable mechanisms made out of thin steel and bolted to the bottom of the crankcase. To maximize its function, it is molded into a deeper section and mounted at the bottom of the crankcase to serve as an oil reservoir. The oil pan also hosts the oil pump and on the bottom of which is the oil drain plug. When an engine is at rest, the oil pan gathers the oil as it flows down from the sides of the crankcase. The oil drain plug can be also removed to allow old oil to seep out of the car during an oil exchange. The plug is then screwed back into the drain hole after the used oil is drained out. Drain plugs are usually constructed with a magnet in it, which in turn collects metal fragments from the oil. Other varieties contain a replaceable washer to prevent leakage caused by corrosion or worn threads in the drain hole. Compared to other automotive parts, an engine oil pan is far more likely to leak. This is because it holds oil being thrown around which eventually finds a leak if there is one. Thus, extra care should be applied when installing an automotive oil pan. Most of the times, the metal at the bolt holes in the oil pan and front cover will be pushed inward around the bolt holes. This is caused by the gasket getting smashed due to their excessive tightening. As the oil pan attempts to stop oil leaks, the gaskets are rendered useless and the oil leak will just get worse. Careful attention must also be placed on the gasket when tightening the bolts and make sure that the gaskets are not being squeezed out from under the oil pan to prevent future oil leaks.

It's at the bottom section of the crankcase of an internal combustion engine, serving as the reservoir for its lubricating oil.

It is the bottom of crankcase in IC ( internal combustion) engine. It is also use as reservoir tank for lubricating oil.

With your answer Eng.Alex Al Yazouri 

Alex , You already provided the answer. I could not find better words than yours.

Oil pans are a major engine cooling system parts. They are usually constructed of thin steel and shaped into a deeper section to fully perform its function. It is also where the oil pump is placed. When an engine is not running or at rest, oil pans collects the oil as it flows down from the sides of the crankcase. In other words, oil pans that are mounted at the bottom of the crankcase serves as an oil reservoir. Engine oil is used for the lubrication, cooling, and cleaning of internal combustion engines.

Oil Pan in an engine is located in the bottom of the Engine assembly to collect the lubricating oil and to support for lubricating cycle in continues process.

An Oil Pan is the container which contains the oil that circulates and lubricates the Engine.

Oil pan is the one of the component of the engine. Which is normally mounted bottom of the engine. Here the lubricating oil is stored and circulating continuously for the engine components where the friction and heat produced. This component is normally called as Crank case.

the bottom part of the crankcase of an internal-combustion engine, in which the oil used to lubricate the engine accumulates.

I agree with the expert answers.