Oil leak near transmission / rear main seal

[Aquineas]

Even if you don't intend to keep it for long, I would still get it fixed under warranty. Not only would you be doing the next owner a favor, if enough people get it fixed under warranty, it will hopefully sting Genesis enough to fix the issue at the source so they don't have to pay out $5K extra in warranty claims after a car is sold. In other words, Genesis, get your quality control issues solved. It is more important than ever, especially considering 2021 will probably double (if not triple) the number of vehicles sold. Don't make people regret moving over.

 

[Husky]

Ugh, still not very good at attaching pics in this app. There were supposed to be three.

 

[Husky]

Even if you don't intend to keep it for long, I would still get it fixed under warranty. Not only would you be doing the next owner a favor, if enough people get it fixed under warranty, it will hopefully sting Genesis enough to fix the issue at the source so they don't have to pay out $5K extra in warranty claims after a car is sold. In other words, Genesis, get your quality control issues solved. It is more important than ever, especially considering 2021 will probably double (if not triple) the number of vehicles sold. Don't make people regret moving over.

I probably will get it fixed, if there is indeed a leak, although I don't have a lot of confidence in their mechanics to tackle the job if it is the rear main seal. Sad to say.

 

[rmod]

During my last oil change on my 2.0T, I noticed that along with this particular seep at the bell housing, I also have a spot on the oil pan gasket leaking. Neither leaks have come to a point of dripping.

 

[pulsar]

Hard to really tell if you have a real leak, or if what your seeing is just some residual weeping that could be from something else? Other pictures posted here that bell housing drain hole had a wet dribble of oil so you know if came from up inside. I’d wipe the area clean and check again in 4 or 5k miles and see how it looks?

 

[Slip_Angle]

Hard to really tell if you have a real leak, or if what your seeing is just some residual weeping that could be from something else? Other pictures posted here that bell housing drain hole had a wet dribble of oil so you know if came from up inside. I’d wipe the area clean and check again in 4 or 5k miles and see how it looks?

Yeah, I agree. This is a hard one. I wonder if it's something that happens in a specific situation producing a quick seepage and then nothing again. My service manager said it's possible it could be the same issue Hyundai has with the 3.5 oil pressure sensor leaking and then running down the valley and out at the bell housing. Maybe even some oil pressure sensors installed wrong causing a drip.. All speculation but it would be nice for this to get figured out.

 

[huck2021]

Here's a tip that a mechanic gave me once when dealing with leaks.

Get a roll of builders paper or craft paper. If you are a DYI at home, then builder's rosin paper will work. If you have kids, just get some craft paper. They can use it after to draw.

Cut 2 8ft pieces and put them under the engine/tranny area. This makes it very easy to spot small leaks and you can cover the entire engine/tranny area this way. The paper makes it much easier to spot smaller leaks.

Also useful if you don't have a dedicated parking area. My friend used this as his parking complex. They have a garage but no assigned spaces. He had to put some plastic down too as there was already oil spots, but this made it easy to spot a leak in his BMW that his dealer said was fixed.

 

[Slip_Angle]

Here's a tip that a mechanic gave me once when dealing with leaks.

Get a roll of builders paper or craft paper. If you are a DYI at home, then builder's rosin paper will work. If you have kids, just get some craft paper. They can use it after to draw.

Cut 2 8ft pieces and put them under the engine/tranny area. This makes it very easy to spot small leaks and you can cover the entire engine/tranny area this way. The paper makes it much easier to spot smaller leaks.

Also useful if you don't have a dedicated parking area. My friend used this as his parking complex. They have a garage but no assigned spaces. He had to put some plastic down too as there was already oil spots, but this made it easy to spot a leak in his BMW that his dealer said was fixed.

Good idea but most of the under side of the car is covered.. The leak would need to be more significant.

 

[huck2021]

Yes the splash shield may obscure the really small leaks, but there are still a number of holes in there. I usually have the paper around anyway for projects around the house.

 

[Husky]

Hard to really tell if you have a real leak, or if what your seeing is just some residual weeping that could be from something else? Other pictures posted here that bell housing drain hole had a wet dribble of oil so you know if came from up inside. I’d wipe the area clean and check again in 4 or 5k miles and see how it looks?

Yes, I decided to clean it up and will check again in 5k (that may take another year at this rate!).
It could be from that U-joint or something up above. That happened to me on my E46 M3. It looked like a rear main, but turned out to be from an oil pressure regulator valve screwed into the side of the block up above. Heat from the headers would cook the factory O-ring.
I'll check back in at the next oil change.

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[Slip_Angle]

Yes, I decided to clean it up and will check again in 5k (that may take another year at this rate!).
It could be from that U-joint or something up above. That happened to me on my E46 M3. It looked like a rear main, but turned out to be from an oil pressure regulator valve screwed into the side of the block up above. Heat from the headers would cook the factory O-ring.
I'll check back in at the next oil change.

What ever came of this?

 

[Husky]

I haven't done an oil change again since then, haha. Thanks for the reminder, I'll let you know what I find when I do.

 

[therican]

Well I have the leak

2021 G70 Sport; ~3k miles

 

[pulsar]

Well I have the leak

2021 G70 Sport; ~3k miles

So you have around 3000 miles on your 2021? Had first oil change yet and if so did you do it or the dealer? I’d watch it for another oil change before allowing a dealer to tear apart the car. Could be some residual from some place? Wipe it clean and see how it looks in another 3000 miles.

 

[therican]

So you have around 3000 miles on your 2021? Had first oil change yet and if so did you do it or the dealer? I’d watch it for another oil change before allowing a dealer to tear apart the car. Could be some residual from some place? Wipe it clean and see how it looks in another 3000 miles.

Not yet, could be some residual, but the longer I let it go the less value I'm going to get out of my car; honestly, I'm about to just hit the eject button on this entire vehicle if I'm being honest.

If I can get 46-47 I'm only out 2k on the vehicle .. really soured me

 

[Slip_Angle]

Not yet, could be some residual, but the longer I let it go the less value I'm going to get out of my car; honestly, I'm about to just hit the eject button on this entire vehicle if I'm being honest.

If I can get 46-47 I'm only out 2k on the vehicle .. really soured me

I've seen people jump prematurely and then regret it. Play it out and see what happens. This may just be the oil pressure sensor at the top of the engine leaking and running into the bell housing.

 

[therican]

Still an involved tear down.. not like Hyundai dealer techs are ... good...

 

[Slip_Angle]

Still an involved tear down.. not like Hyundai dealer techs are ... good...

Maybe but if it's just the oil pressure sensor it's easy. All I'm saying is don't panic unless of course you don't like the car...

 

[therican]

I'm going to end up annoying the shit out of Genesis Corporate because I'm more than likely not going to be happy with tomorrows findings; though, I don't trust Hyundai tech's whatsoever.

I have dealer tech phobia...

Though OTOH, I basically have enough equity in the car to just sell it to Carfax/KBB (who's offering 46.5) to cost me basically the payments; I could then just go without a car for awhile then

 

[Husky]

I noticed a similar thing on mine, and will be checking it again soon when I do my next oil change. I've got 18k miles.
If you really like the car, ditching it seems rash. There's hardly any oil at all there. It seems to be on the head of a bolt, close to one of the front driveshaft U joints (not really around the "drain hole" on the bottom of the bellhousing). I wonder if it could be a lubricant from that, or from a leak above, as Slip suggested.