S54 large sump plug, no not the oil drain plug.

[ac427]

I have a very slight oil leak at this plug on the sump.

Is the torque value for the plug known?

Has anyone else found oil leaked from here?

[cobra]

Never heard of a leak from there, but looks easy enough to put some thread sealant (such as Gasoila) and retorque it the next time you do an oil change.

Torque specs are hard for those kinds of threads. Take note of how many threads are showing. Don't overtorque or you risk cracking the pan.

[ac427]

Thanks, it doesn't appear as a part on RealOEM.

It must be at least a 20mm Allen key.

[bmwfnatic]

It’s a 22mm allen. I take them out on my rebuilds, from factory they have some kind of green thread sealant on the threads and they can be very stuck.

I mark both the big plug and the oil pan with a center punch, and then count the amount of rotations until it falls out, then when it is time to put it back together I apply new thread sealant and tighten until my punch marks line up again.

[ac427]

It’s a 22mm allen. I take them out on my rebuilds, from factory they have some kind of green thread sealant on the threads and they can be very stuck.

I mark both the big plug and the oil pan with a center punch, and then count the amount of rotations until it falls out, then when it is time to put it back together I apply new thread sealant and tighten until my punch marks line up again.

Top stuff. Thanks very much.

I wonder if it is for dry sumping purposes.

[prostcfc]

Top stuff. Thanks very much.

I wonder if it is for dry sumping purposes.

Bump. ac427I have the same weeping at this point (cleaned everything up, came back two weeks later and saw some oil on the bottom of the threads). Did you end up fixing this by removing and re-sealing?

[George Hill]

I've tightened more than a few that were leaking with no ill effects. Its a big thread so it'll take some torque but don't try to kill it.

Edit: I've used a 22mm head bolt with a nut threaded on and then turned the nut

[ac427]

Bump. ac427I have the same weeping at this point (cleaned everything up, came back two weeks later and saw some oil on the bottom of the threads). Did you end up fixing this by removing and re-sealing?

I did think about removing and resealing but in the end the mechanic just tighten it a few degrees.

A 22mm Allen key is required.

[JakeM346]

Most likely it’s just Green loctite. Specified to also work as sealant and bmw has used this a couple of times for this purpose in the past

It’s a 22mm allen. I take them out on my rebuilds, from factory they have some kind of green thread sealant on the threads and they can be very stuck.

I mark both the big plug and the oil pan with a center punch, and then count the amount of rotations until it falls out, then when it is time to put it back together I apply new thread sealant and tighten until my punch marks line up again.

[ac427]

Is there a part number or Loctite name for the green sealant?

[bmwfnatic]

Is there a part number or Loctite name for the green sealant?

Likely just Loctite 270, as that is green and used by BMW in different areas on the car.

More appropriate would be Loctite 577, which is actually a thread sealer not a thread locker, but the Loctite catalog is so vast that there's never really "the best option" there often are dozens of viable products...

[ac427]

Likely just Loctite 270, as that is green and used by BMW in different areas on the car.

More appropriate would be Loctite 577, which is actually a thread sealer not a thread locker, but the Loctite catalog is so vast that there's never really "the best option" there often are dozens of viable products...

Thank you

[George Hill]

I was cleaning up my toolbox today and ran across my "tool." I know not everyone has a ton of hardware accessible but something to think about if you do.

This is a steering wheel bolt with a nut as a spacer and a 22mm outside dimension nut. You turn the 16mm bolt head which turns the 22mm nut essentially making it an allen socket.

[prostcfc]

I was cleaning up my toolbox today and ran across my "tool." I know not everyone has a ton of hardware accessible but something to think about if you do.

This is a steering wheel bolt with a nut as a spacer and a 22mm outside dimension nut. You turn the 16mm bolt head which turns the 22mm nut essentially making it an allen socket.

George Hill gave this a try today (bought a 22mm hex socket) while doing my CPV. It was really frozen on there, wouldn't budge, and I didn't want to tempt fate by really getting on it. I'll keep on eye on it.

[JakeM346]

It’s actually very likely just green threadlock loctite which according to the data sheet also works as a sealant up to a certain extent.

if it doesn’t move easily heat it up a bit and try again

Likely just Loctite 270, as that is green and used by BMW in different areas on the car.

More appropriate would be Loctite 577, which is actually a thread sealer not a thread locker, but the Loctite catalog is so vast that there's never really "the best option" there often are dozens of viable products...