transmission drain/fill seals?

[anthonyl]

So today I changed my transmission fluid for the first time. The car shifts nice and smooth now. Anyway the fill and drain plugs on the transmission had no sealing washer. I looked at the design and realized a washer couldnt be used anyway. Does anyone know how it is sealed? Or if I missed something. I checked for leaking and it seems ok I just want to be sure.

[minicoop900]

they usually have a aluminum crush washer on them to help seal.
numbers 10, and 12 on the diagram below.
may be able to find replacements that aren't bmw, but you'd have to know the size, or if it doesn't leak, id leave it alone.

[anthonyl]

I think that is for an automatic transmission. I have a manual. The drain and fill bolts don't have a bolt head it is just all threads. The only thing I can thing of is the threads get smaller. which would cause it to get snug. I dont know. Thank you though

[minicoop900]

oh, ok
went and looked on the same program for manual transmission, and it doesnt have one.
so your good without them.

[anthonyl]

Thanks, I was worried. I thought I would have an empty tranny seized up on the side of a highway or something.

[aceyx]

Originally Posted by anthonyl

The only thing I can thing of is the threads get smaller. which would cause it to get snug. I dont know.

Crush washers aren't necessary for all applications--it depends on what's being sealed, the pitch of the threads, materials, how often it's removed, etc. As long as you torqued it down to spec, you shouldn't have a problem.

[a2xguru]

I was told you could not change or add automatic trans fluid due to it being sealed trans, mine slips when cold any thoughts

[anthonyl]

I changed the fluid about 500 miles ago. There are no problems what so ever. I used redline atf d4 and so far its worked great in cold and in warm weather.

[b.u.ti-ful]

Here're directions

http://www.pelicanparts.com/bmw/tech...Fluid_Auto.htm