Oil Pan / Drain Plug threads

Hi folks

I have nowhere to work on my truck (2011 5.7L) at the moment, and with the mileage creeping up I decided to drop by a shop and get the oil changed today.

About half an hour (suspicions rising) in, I asked what was going on and got a half-cut explanation that the threads on my oil pan were worn and the plug wouldn't torque down. Apparently an inexperienced tech had removed the plug, whereas a more experienced hand would've known and turned me away refusing service.

Ten minutes later though, I was given an unprompted refund for the oil change and told that there was no way the issue could've been known til after the plug was removed. I was told respectively that it wasn't, then was, a big deal that it couldn't be torqued down, but that I need to get the threads recut / it's not possible cos the steel is too thin on Tundras so I have to get a new oil pan fitted. No leaks were found after a couple of minutes at 2000rpm and 5mins at idle, and I got out after an hour.

I drove home via a SMOG check (passed) and there's no signs of oil leaking at all nor any warnings on the dash. Gonna go check around the skid plate again in a few minutes.

Has anyone else encountered issues with these threads or plugs? Or is my suspicion that an inexperienced tech just over-torqued the crap out of my plug and stripped the threads more likely?

Any help greatly appreciated, and will go towards restoring my faith in humanity after this pageantry and getting rear-ended yesterday on the freeway in our other car

 

Sounds like your out the door oil change warranty just expired

 

Did they replace the drain plug washer? Who did the previous oil change? Sounds like someone may have applied too many ugga-duggas.

 

Someone probably cranked on it too much. Kind of shitty the shop wouldn't just fix it. My first thought is bump up to the next size tap, whether that's metric or imperial. I think there is a nut or plate welded in that tapped so it's not just thin sheet metal---obviously there's something that the plug is threading into. The next option would be to find a shop that has a welder and is competent, which is easier said than done, and just weld a nut to the outside of the pan and thread a bolt into that.

If its sealed now, my biggest concern would be the bolt backing out. Id crawl under there and put a wrench on it and just see how tight it actually is, and base my concern off of that.