Car wet sumps are a type of design used to lubricate the pistons, utilising the crankcase as an internal oil recycling system. The car wet sump design simply collets oil via gravity and pumps it back into the system, offering convenience in many ways. There are cons, however, as since this system relies entirely on gravity, a vehicle that is not on level ground may not get the oil into the collection plate as desired, creating a situation that can potentially be dangerous and harmful to the vehicle’s engine. In most cases, however, a car wet sump design is recommended, bar a few extenuating circumstances.
Since the car wet sump makes use of existing space, there is no need for an external reservoir, no need for pipes or tubes that may potentially leak, and no need for extra space to store this external reservoir. For these reasons the car wet sump is preferred and desired over the alternative. In some cases, however, such as racing vehicles or sports vehicles, the unusual speed of the vehicle and the shift of its body around corners means that oil will not settle in the collection pan as it should, meaning that a dry sump design is required.
Car wet sumps generally operate well for long periods of time, without crippling maintenance. It is possible for things to go wrong, however, and a car wet sump should not be neglected. It is essential to ensure the oil pump works, the collection pan is not leaking, and that there are no unexpected blockages. Be sure to have your mechanic check these things during regular services, and also clean the needed parts to avoid debris blocking essential passageways.