Oil leaks, finding a leak.

Only the how too diagnose = locate + prove location X is the leak.

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ASE Master Mechanic
https://whunter.carrd.co/

Prototype R&D/testing:
Thermal & Aerodynamic System Engineering (TASE) Senior vehicle instrumentation technician.
Noise Vibration and Harshness (NVH).
Dynamometer.
Heat exchanger durability.
HV-A/C Climate Control.
Vehicle build.
Fleet Durability
Technical Quality Auditor.
Automotive Technical Writer

1985 300SD
1983 300D
2003 Volvo V70

https://www.boldegoist.com/

Start with power washing / degreasing engine COLD taking note of where concentration of muck is heavyest.

Let dry

Start the vehicle and let it run for a few minutes (depending on seriousness of leak) then shut down and look around for moisture.

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Adam Lumsden
(83) 300D
Vice-President of the MBCA International Stars Section

Clean the engine, grab a light and look around.

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2016 Corvette Stingray 2LT
1969 280SE
2023 Ram 1500
2007 Tiara 3200

A big piece of clean card board on the ground helps to locate where it's dripping from. As long as you don't have a plastic cover under there

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1999 E300DT (131,800) 154,000 Black on Black SOLD

2006 CLK 500 coupe Capri Blue on Grey (zoom,zoom)
47,000mi

04 VW TDI Passat 80,000mi
(Techno)

How to eliminate oil dependency through market-driven approaches.
“We could cut oil use in half by 2025, and by 2040, oil use could be zero,”
The Sound of Diesel Speed
Ode to MB