BMW E46 318ti Query: Disconnecting Water Hoses from N42B20 Oil Cooler - Possible?

Hello

I am aggravating the problem in my engine with water constantly getting into the oil. Despite the quite obvious answer, which is the high probability of damage to the head gasket, the mechanic, diagnosing the operation of the engine, still does not believe that it was a head gasket. The engine runs smooth, quiet and keeps the engine temperature constant.
Talking by chance with another mechanic, I found out that corrosion of the aluminum walls in the oil cooler is something common, at least in diesel engines. There are small perforations there and this is often the reason why oil and water mix.
And now my question is, can I disconnect the water hoses from the oil cooler and connect them together to keep the circuit closed and thus eliminate the cooler?

The photo shows something like a knob. I understand that this is a valve on the main circuit and turning it off will stop all the oil from flowing through the engine or will it just bypass the oil filter?

And did I write somewhere that it is mounted so-so? She is well aware of its tasks.
As for the oil overheating, I don't want to bypass the oil cooler and drive this car onto the highway in the summer. Now I am reminiscent of winter, and I am going to drive the car in traffic jams and the oil temperature in such a situation. I do not know any other way to check the tightness of a non-dismountable element. This solution would be for a few days to observe whether the residual water in the oil will evaporate and the car will stop smoking steam from the exhaust pipe and thus eliminate or not the oil cooler.

I would change the oil - if it is possible, of course - you don't know how much fluid there is in the oil. Keep the oil at the maximum level - the more it is, the lower the risk of overheating.

Low air temperature will have little effect on the oil temperature limit. Not a problem on short journeys, and you can overheat even in winter on longer journeys. Do you have a working oil level sensor (responsible for the yellow oil light)? Because he actually monitors overheating, so some protection would be - you get a light and stop without damaging the engine.

The indicator light on the route - add oil immediately. You can drive some of them at a limited speed.
The light on after the engine is turned off - add oil at the earliest opportunity.
That's what the manual says

The indicator light is on immediately after starting the cold engine - sensor pad.

The car will not stop smoking with the current aura, so you will not check this way.

Dear author, please specify: do you have water in oil or oil in water? Because it's a big difference ...

Cobrat wrote:

author, please specify: do you have water in oil or oil in water?

After all, the author wrote at the very beginning ...

mavi wrote:

I am aggravating the problem in my engine with water constantly getting into the oil.

This is how water seeps into oil. There is still quite a lot of steam coming from the exhaust pipe, and when I drive it on a cork or a dipstick it gets so-called. delicate mayonnaise.
Besides, the engine is running normally; even and quiet and keeps the temperature evenly. On average, I have to add a liter of fluid to the cooling system every 300 km, and there are no water leaks to the outside. The engine was inspected three times very carefully.

Maybe it's the head gasket.

One cannot deduce much from the photos, as it has been written before: it is disassembled and checked.

RobertLodz09 wrote:

Cobrat wrote:

author, please specify: do you have water in oil or oil in water?

After all, the author wrote at the very beginning ...

mavi wrote:

I am aggravating the problem in my engine with water constantly getting into the oil.

Do you have eyes or have they fallen out? The topic of the thread is: "... mixing oil with water", in the first sentence it says: "... water getting into the oil", so please clarify, because there can be both water in oil and oil in water, means something else (as you know), and people treat statements interchangeably !!! Better, however, just to screw yourself and get 2 points, report back .

@mavi "Cap" for the photo, the head to be checked properly and do not drive like this, you have poor lubrication ...

Not necessarily a gasket - BMW is famous for cracking heads. So there may be surprise and costs.

mavi wrote:

The photo shows something like a knob. I understand that this is a valve on the main circuit and turning it off will stop all the oil from flowing through the engine or will it just bypass the oil filter?

Close the hatch immediately and never look there yourself again. This is not a valve, just a vent.

And come on with the oil cooler, you'd have oil in the tank.

[quote = "Cobrat"] And come on with the oil cooler, you would have oil in the tank. [/ quote
cobrat writes well.
and test the gases in the system cooling, a great patent, and then only the head gasket ...

Check the fan and replace the O-ring between the filter and the cooler to be sure. it gets tough over time.

This is a faulty valvetronik engine, everything can kneel in a moment, of course, you can bypass the oil coolers, of course, you can remove the heads and make a new gasket.
I do not know what you are counting on, get to work and collect for repairs and do not click on the forum here and on others.
What tempted you to buy these padacas were you hungover or did your friend persuade you?
.