Abstract: An oil circulating device for an internal combustion engine including a separating-decanting device, a cylinder housing, a pressurized oil feeding pipe circulating pressurized oil to mobile parts of the engine, and a siphon-forming oil return circuit. The oil return circuit includes a canula with an upper end that opens into the separating-decanting device to collect therein decanted oil and a lower end immersed in an oil tank opening freely into a plane located between the upper and lower ends of the canula. The tank includes an insert tightly inserted in a passageway formed through a wall of the pressurized oil feeding pipe, the insert forming simultaneously a closure plug for the oil feeding pipe and for an oil tank.

Abstract: An oil circulating device for an internal combustion engine including a separating-decanting device, a cylinder housing, a pressurized oil feeding pipe circulating pressurized oil to mobile parts of the engine, and a siphon-forming oil return circuit. The oil return circuit includes a canula with an upper end that opens into the separating-decanting device to collect therein decanted oil and a lower end immersed in an oil tank opening freely into a plane located between the upper and lower ends of the canula. The tank includes an insert tightly inserted in a passageway formed through a wall of the pressurized oil feeding pipe, the insert forming simultaneously a closure plug for the oil feeding pipe and for an oil tank.