Sump plug torque values

[The Other PaulG]

Bit of a random question, but it's been on my mind for a while.

A few years ago I discovered, to my expense, that stated torque values are based on dry, not lubricated threads. (Copperslip on some triple clamp threads, if I recall)...

But then we read about people being very careful to tighten their sump plugs up to the correct torque. My point is, other than during a bench rebuild I can't easily imagine a situation where sump threads would ever be dry, and yet people diligently crank them up to the recommended torque figures. Is this why we sometimes see issues with stripped threads (and what a PITA that must be)? Or am I missing something (quite likely)!

 

[cookie]

I almost never use a torque wrench on sump plugs, oil filter and screen housing bolts for that very reason. They often seem way too tight to me.

 

[The Other PaulG]

I almost never use a torque wrench on sump plugs, oil filter and screen housing bolts for that very reason. They often seem way too tight to me.

Yes, I agree.

 

[DrFarkoff]

General rule of practice for me Especially for steel in alloy

Is to thread the bolt or plug in and once you have to apply any real pressure to the tool to make it turn

1/8 th to an absolute Maximum of a 1/4 turn

For the pedants out there 45 degrees to an absolute Maximum of 90 degrees

 

[Redboots]

Always use a new crush washer and re-anneal a solid one.
Snug it up plus a little bit.