Test dipstick for sealing an oil sump during an engine oil leak test

A test dipstick for sealing an exit port of an engine during an engine oil leak test, the test dipstick comprising:

• a shaft extending along a central axis and having a first end portion opposite a second end portion;
• a tip portion joined to the first end portion, the tip portion having a plurality of sealing features configured to seal to the engine when the dipstick is disposed within the exit port;
• and
• a handle portion joined to the second end portion, the handle portion having a base that abuts the engine when the dipstick is disposed within the exit port and having a grip portion extending from the base,
• wherein the test dipstick is 3D printed and comprises a plurality of additive layers, each of the plurality of additive layers parallel to one another, and each of the plurality of additive layers disposed at an angle relative to the central axis, and wherein the angle is 50° ±5°.

A test dipstick for sealing an exit port of an engine during an engine oil leak test, the test dipstick comprising:

• a shaft extending along a central axis and having a first end portion opposite a second end portion;
• a tip portion joined to the first end portion, the tip portion having a plurality of sealing features configured to seal to the engine when the dipstick is disposed within the exit port, wherein the plurality of sealing features includes a plurality of O-rings disposed along a length of the tip portion, wherein the plurality of O-rings comprises a first O-ring disposed in a first groove of the tip portion, a second O-ring disposed in a second groove of the tip portion, and a third O-ring disposed in a third groove of the tip portion, and wherein the second O-ring is disposed between the first O-ring and the third O-ring;
• and
• a handle portion joined to the second end portion, the handle portion having a base that abuts the engine when the dipstick is disposed within the exit port and having a grip portion extending from the base, and having an end cap that abuts the grip portion opposite the base,
• wherein the test dipstick is a 3D printed part comprised of Nylon 12, and wherein the test dipstick comprises a plurality of additive layers, each of the plurality of additive layers parallel to one another, and each of the plurality of additive layers disposed at an angle relative to the central axis, and wherein the angle is 50°±5°.