Home made Oil pan gasket.

[Mig]

I never really had much respect for RTV until I got into aviation. I see it used quite a bit around the engines of piston aircraft.

These engines are quite similar to ours. Mostly flat 6 piston engines. They are tough; they operate at high power settings all day long, and in both hot and very cold environments.

I've never seen RTV leak on an airplane. It's usually other areas that start to seep.