I have a Honda Civic with a stripped aluminum oil pan. Right now the bolt is holding in place alright with a very slow drip, but with the next oil change I will need to make a repair.
I would like to avoid replacing the whole pan due the costs, and buying tools to re-thread the pan cost about as much as the oil pan itself. This leaves me with two options (that I am considering) which are to either use an oversized piggyback plug, or to try and use JB Weld to attach an adapter (linked) that has a female end identical to the male end.
I have heard that oversized piggyback plugs work rather well when used with JB Weld, but if anything goes wrong with the inner bolt you need a new oil pan. For this reason, I want to try to use an adapter.
I found a short adapter that has a male end the size of my oil pan, and a female end of the same size. If I use JB Weld to attach it, I would have a new hole to use whatever plugs or drain valves that I would like. My only concern is that it isn't oversized and I am not sure if the bond will be strong enough to hold it in place for years to come (preferable for the life of the car).
Question: Would it be safe to try and permanently attach the adapter in a stripped hole with JB Weld, or just play it safe with a oversized piggyback plug?
Decision: I have decided to go with an oversized piggyback drain plug. As I did further research I found plenty of people saying that JB Weld as very poor shear strength, which would be required to hold the adapter in place while screwing and unscrewing the new plug. In addition to that I am not sure on the exact state of the threads so I am not sure how well JB Weld would even grip the already small surface area.
Thank you for all of your answers and advice!