Should I replace or weld the oil pan on my Audi A4 B7 2.0 TFSI?

Hello,

On Saturday, a friendly truck, car, or van transporter lost one of these wheel clamps (http://www.asb-logistic.de/uploads/pics/pkw_transporter.jpg those red things). Unfortunately, I didn't have a chance to swerve and could only get between the wheels.

Now I have a small hole in the oil pan, and I'm losing about 100ml of oil overnight.

Is it possible to repair something like this while it's installed, or does the entire tub need to be removed and replaced?

The oil pan is made of aluminum/magnesium.

Thank you very much.

Benni.

Hi,
in my humble opinion, new. Even if the material can be welded, you can't do it with the reservoir on the engine, with the oil vapor/film inside.
hg
Herbert.

Not possible in the attached state. Cast iron must be preheated before welding, otherwise it will crack again within two days.

So, I would say it's about .
We have frequently welded (or had welded) diesel tanks from trucks, and those are also made of aluminum.
Of course, I don't know for sure whether the oil pan is made of cast iron, but if Michael says it is, I'm inclined to believe him.
Expanding it? Well, why don't you ask a specialized company that will actually do the work? They'll certainly be able to give you an answer.
If you catch someone who is into it, it might also work like this .

Steel oil pans can be welded (after being disassembled) and properly cleaned. Cast iron or aluminum can also be welded, provided you have the right equipment and people who know how to use it. However, the question of cost-effectiveness always arises. In any case, disassembly and reassembly are necessary, which means a new seal is always required. The decision is usually easier when you compare the price of the replacement part to the cost of the repair. The invoice may already look quite clear, especially if you have to have the oil pan repaired.

I think his main concern was whether the bathtub could be repaired while it was installed.

Unfortunately, with the A4 B7, the front axle either needs to be completely removed or lowered using special tools in order to remove the underbody panel. He definitely wanted to avoid doing that work.

But I can only confirm that it doesn't work.
I once tried to weld a crack in the oil pan of my Golf. It's hard to get a good seal.
Needs to be renovated and cleaned.

Voodoo perfectly captured what I was trying to convey.

Well, the car is now at the VW/Audi dealership... I still have the extended warranty and I don't want them to make a big deal out of it because of some "botched" repair.

The bathtub costs 90 euros without tax, so it's brand new.

I'm attaching the pictures. Looking at the main structure, you can get a sense that things could have been much worse.

Hey! If this thing gets caught in a rut on the road and starts spinning, it could even shatter a windshield. Did you get lucky?

Yes, that's also my personal conclusion and my comfort. I don't think I did anything wrong in that situation, and I believe I reacted correctly by trying to steer the car directly into the object rather than attempting an evasive maneuver.

Perhaps less would have happened if I hadn't braked, and it might have just slid under the car... but on the other hand, it could have also shot up into my rear end or something.

I initially thought it was just a stick because it was under a bridge, and it appeared black to me at first.

Well, it's supposed to cost 550 euros...

Hi.
Here are a few other options:
Drain the oil, thoroughly verschandeln the hole with brake cleaner, and fill it with putty.
It's not beautiful, but it seals well. I've had to make it myself several times.
Sincerely, Sure, here is the translation of the text from German to English:

"Dirk"

It might hold for now, but it will definitely break down again in the long run.

It might be a short-term solution, but not a permanent one.

It's still working for me; it's been 4 years already.

The "correct" repair is to replace it.

If it were verschandeln on the inside, it would definitely be possible to weld it while it's still installed. You just need to find someone who can do it and who will make sure that the particle in the oil pan is removed.

Quote:

For me, it still holds; it's been 4 years already.

What did you use to glue them? For emergencies and when time is short, this would be a useful temporary solution.

standard filler paste

Quote:

completely normal filler compounds

Hopefully, no engineers from V*G are reading this. You might still come up with a brilliant idea to use this material as a new type of joining material.
You could glue the entire engine together instead of screwing it .

BM wrote:

The "correct" repair is to replace.

Exactly that is happening now.
Unfortunately, the price is quite high (VW charges 550 euros, while my trusted independent mechanic would do it for 300), but since the car has a relatively high oil consumption even without a hole in the oil pan, I don't want to risk any warranty or goodwill issues.

I was supposed to have an oil consumption test scheduled for Monday, but now I'm having the oil changed to Mobil1 0W40 and I hope that I can increase the mileage between oil changes from 1000km to 5000km.

When it comes to fuel consumption, the 2.0 TFSI engine is definitely not particularly economical... although it's otherwise a great engine.