Oil seeping around tranny

[MH20jy]

2018 35i xdrive. 75k miles. I replaced both rear diff and transmission oil yesterday and found some oil residue at the end of tranny. Is it the rear main seal leak? I guess it will be covered in cpo warranty right?

[srybicki]

Should be

[Vdesai0326]

What color is it??
Is it coming from the oil pan at that back corner?

If you pop off that rubber grommet, look in the bell housing see if you see any oil, if not rear main is fine.

If it's transmission fluid, it's your torque converter seal.
If it's oil, and bell housing is dry, oil pan is starting to sweat/leak

[F15_SGM]

Oil pan is leaking

[MH20jy]

Originally Posted by Vdesai0326

What color is it??
Is it coming from the oil pan at that back corner?

If you pop off that rubber grommet, look in the bell housing see if you see any oil, if not rear main is fine.

If it's transmission fluid, it's your torque converter seal.
If it's oil, and bell housing is dry, oil pan is starting to sweat/leak

Thanks. When you say oil pan, it's the engine oil pan right? Bc I just replaced the tranny oil pan but it's bone dry. Do I just pull the rubber grommet out? I really can't tell what color it is.

[Vdesai0326]

Originally Posted by MH20jy

Thanks. When you say oil pan, it's the engine oil pan right? Bc I just replaced the tranny oil pan but it's bone dry. Do I just pull the rubber grommet out? I really can't tell what color it is.

Yes the oil pan not trans pan.
Yes that grommet just pops off, with a flash light take a look inside and see if the bell housing looks wet.

[tlow98]

99% back of the oil pan. It’s one of the first places to leak in bmw inline 6s. Very common. As in, they all do it eventually.

Rear mains are very hardy. I wouldn’t fret or replace it if it’s the pan and not dripping on my garage floor. It won’t hurt anything.

[Tomcat_F15_STL]

Oil Pan Gasket. Very Expensive to pay for. Very Exhausting to DIY.

I am doing mine now. Sixteen hours work to get the pan out.

[Smoove.]

Originally Posted by Vdesai0326

Yes the oil pan not trans pan.
Yes that grommet just pops off, with a flash light take a look inside and see if the bell housing looks wet.

Apologize for the dumb question but I see two rubber grommets, is the one you're referring to on top side of picture?

[Tomcat_F15_STL]

This is an older thread, now.

It is the lower grommet that allows for inspection.

[P1]

Originally Posted by Tomcat_F15_STL

Oil Pan Gasket. Very Expensive to pay for. Very Exhausting to DIY.

I am doing mine now. Sixteen hours work to get the pan out.

Attachment 2931837

Indeed.

$3K in labor
$500 in parts

That's for xDrive. I bet sDdrive is a little cheaper.