2009 VW Passat CC 2.0L TDI
CBBB engine

Confirmed reasonable leak of oil from oil sump - looks like damaged aluminium female threads on the 19mm sump plug. Somehow happened after last oil change - I normally use a torque spanner to tighten it to 30Nm, but this time I couldn't find the torque spanner at the time and used a breaker bar instead (to both get the old plug off and put a new one on after the oil change). I assume the oil pan threads stripped either when taking the old plug out or tightening the new plug).

A new oil pan with part number VW 03G 103 603Q is $613.80 from the VW dealer! I understand it is also a problem replacing the oil pan due to the two semi-hidden bolts (at the bell-housing).

Does anyone have experience with repair options or alternative DIY solutions? I've now read a little bit about Time-Sert, Helicoil, and other thread repair options, along with something called a Fomoto Valve and Loctite? I'm happy to seal the sump hole permanently and use a suction pump to do oil changes in future.

Any recommendations?