lexus-is2

Did an oil change on my IS250 today, when tightening the bolt back on, i set my torque wrench to the 40Nm as per the Lexus technical specs, but when i was tightening I thought it was getting too tight and felt that the torque wrench maybe was not working and bet like i've over tightened to the extend that for a moment it felt like it was getting loose. So stopped immediately and removed the bolt. Checked the torque wrench everything looked ok, so took the torque wrench back to 0 and adjusted back to 40Nm and re-attempted slowly. It did eventually click so it has tightened to 40Nm. But I'm worried I might have damaged the thread on the bolt or the pan.

There's no leaks. Just wondering removing this bolt for every service, does it not wear out the thread and what happens and what solutions are there if thread becomes worn?

Raybean

iTrader: (3)

i would check again in another 100 miles and if it does not leak i wouldn't worry about it. Now on a side note in my few years i worked for a dealership i have never torque down a oil drain plug.

knguyenk

I agree with Raybean and check it over at 100 miles and see if there's any leak. I've always hand tightened all oil drain plugs on every car I've worked on since I first started working on cars almost 8 years ago.

Gville350

iTrader: (10)

^Yeah, same here! I hand-torque my oil pan bolt; after 18yrs working on cars, your arm becomes the torque wrench. LOL!

Remove the removeable plastic under tray (the small one under the oil canister) so that any leaking you'll be able to immediately see under the car.

Good thing is that the oil pan is steel; so if you did damage it, it can be tapped to "fix" the threads. But to me, it sounds like you're fine.

lexus-is2

Thanks for the replies. Looks good so far and no leaks

pheonix72

iTrader: (6)

Hahaha...this is one of the reasons not to bring your car to the dealership for services unless you really have to

To the OP- i would not worry to much about wear on the drain hole/bolt. The seal created when the crush washer (usually coopper) get deformed/compressed when the bolt is tighten and it doesn't take much force. Just make sure you use a new crush washer at every oil change and you will be OK