I don’t think there’s an insert, at least on most aluminum oil pans. Lots of threads and not a lot of torque when tightening keeps them from stripping, I guess. Although it does happen of course.
I don’t think there’s an insert, at least on most aluminum oil pans. Lots of threads and not a lot of torque when tightening keeps them from stripping, I guess. Although it does happen of course.