Oil make-up system with siphon mitigation

An oil make-up system, for an engine of a machine, the system comprising:

• an oil pan for supplying oil to engine components;
• an auxiliary oil tank positioned above the oil pan;
• a return for conveying oil from the oil pan to the auxiliary oil tank, the return including a return pump;
• a supply for conveying oil from the auxiliary oil tank to the oil pan, the supply including a supply pump;
• and
• a siphon-terminating-connection between the supply and return,
• wherein the supply includes a trap, and
• wherein an uppermost section of the trap is located above an oil level in the auxiliary oil tank.

An oil make-up system for an engine of a machine, the system comprising:

• an oil pan for supplying oil to engine components;
• an auxiliary oil tank positioned above the oil pan;
• a return for conveying oil from the oil pan to the auxiliary oil tank;
• the return including a return pump;
• a supply for conveying oil from the auxiliary oil tank to the oil pan, the supply including a supply pump;
• and
• at least two siphon-terminating connections between the supply and return, the siphon-terminating connections including:
• a partition dividing the auxiliary oil tank into a return chamber and a supply chamber;
• and
• a bypass between the return and the supply.

A method for operating an oil make-up system to prevent overfilling of an oil pan of an engine of a machine, wherein the oil make-up system includes the oil pan and an auxiliary oil tank positioned above the oil pan, the method comprising:

• actuating a return pump of a return to convey oil from the oil pan to the auxiliary oil tank;
• actuating a supply pump of a supply to convey oil from the auxiliary oil tank to the oil pan;
• and
• breaking a siphon in the supply in response to a failure of the supply pump,
• wherein breaking the siphon in the supply comprises introducing air into the siphon via a siphon-terminating connection.