Of course I go to change transmission fluid and the first thing I see on my phone when I search up the torque spec for the drain plug is 39 ft/lbs from this link... https://www.s2ki.com/forums/s2000-un...l-bolts-80549/
I should have kept scrolling but I was already under the car and wanted to find out real quick and figured this would be accurate. I find out later that the torque spec is 29 ft/lbs for the drain plug but I got it set to 39 ft/lbs. Should I go back and fix it or should it be fine till next time I change the fluid?

 

Leave it. No reason to back it off now. It's totally fine as long as you didn't strip it going in, which you most likely didn't.

 

Besides, to properly re-torque to a lower value, you'd have to loosen the bolt most of the way back and then retorque it.

You may end up losing some fluid.

 

Yeah, pretty sure I didn't. Thank you guys I'll fix it next time I drain the trans lol

 

To properly torque a fastener, it just needs to be moving. It doesn't have to be especially loose. So if you did want to retorque in this situation, you would loose a drop or two at most. Only need to loosen enough so it moves while tightening.

Only mentioning for posterity, whoever looking into this thread someday future.

 

Yes, but I mention this because I've heard of people backing off the difference. In this case backing off 10 ft-lbs, from 39 to 29.

That is not the correct way to do it.

In any event --- in this case, he does not need to re-torque the bolt.