[Scharbag]

Aluminum pans scare me. Torque wrench every time. Too many techs over tighten drain plugs on steel pans too. At least they are harder to strip. Still, no excuse for poor workmanship.

Time-sert is a great option and CAN be done with the pan in the car by a competent tech. But as others have said, great time to drop the pan and do the rod bearings. When the pan is off, install a time-sert.

If I were you, I would check the other pan plug for signs of damage too.