Hello

 

On my superb 2021 Dsg, i see today that i have an oil leake.

I think its not leaking dsg oil, but engine.

Is this critical? 

Its not manny oil but it is somethink… on picture i already wipe oil down.

Looks like it could be the old oil leaking past the flywheel bolts problem. Not seen it on the newer stuff before though.

Must i fix this?  Its not muc leaking… 

Damaged gasket..?

Remove flywheel bolts and add thread lock.

Do you even know what engine the OP has to give such advice?

 

I've been working on engines for over 50 years and have yet to come across one that has an oil gallery drilled through to the flywheel mounting flange which is outside of the rear main bearing seal.

 

What I am saying is there is no oil behind the flywheel bolts to leak past them, please correct me if I am ignorant of something.

 

If the OP is certain that the oil is engine oil then it must be leaking from the crankshaft rear oil seal.

1 hour ago, J.R. said:

If the OP is certain that the oil is engine oil then it must be leaking from the crankshaft rear oil seal.

Sounds most likely cause. Employ your nose as well, if it were not engine oil but transmission oil then it has an aroma all of it's own. 

Edited 6 February, 20251 yr by Gammyleg

Its new type engine with 147kw. Dsg 7

 

I check today again.

 

There was little oil to see again…not huge leak. I tight this big bolt and another one at the back.. it was not tighten good. But that will not solve the problem i guess becous there is no oil behind..? 
It comes definetly out of there where is flywheel. 

So if there is no major leake, should i woried?  Must be fixed?  
 

 

Probably not essential to get the oil seal changed immediately but it not likely to repair itself. I left mine for 6 months after being told it had a slight leak. I finally got it changed when the clutch pack was replaced as most of the cost of repair will be labour charge.

You would be surprised what sort of ideas they come up with now.

They or you?

 

I cannot imagine any scenario where engine oil could leak from flywheel bolts.

 

Its bad form to be advising a stranger to remove their engine to loctite the flywheel bolts based on a figment of your imagination.

Edited 6 February, 20251 yr by J.R.

The tsb is not a figment of my imagination 

Surprised me too @J.R., but make yourself a cup of tea and then try googling "oil leaking from flywheel bolts". Quite a bit of reading matter pops up.

Can somebody pleas answer my question?

If it is not leaking from somewhere higher up (above gearbox) and running down to there, then it seems likely that you would have to remove the gearbox to find the source of the oil.

 

May be better to just keep cleaning it and making sure you are not losing much oil by checking the level regularly.  

If it is leaking enough to make a mess on your driveway, then it would be kind to other road users if you fix it before it gets much worse.

 

It would be helpful if @Blue8793841 could maybe show us the technical service bulletin he mentions. Or at least tell us which brand, model and engine(s) it applied to.

22 hours ago, J.R. said:

please correct me if I am ignorant of something.

 

15 hours ago, Breezy_Pete said:

Surprised me too @J.R., but make yourself a cup of tea and then try googling "oil leaking from flywheel bolts".

 

Thats why I made the request, every day is a learning day, I look forward to reading the TSB to get the info from the horses mouth.

 

I had the same reaction initially to leaking camshaft pulley bolts but then learned what was going on with them, far too many disadvantages of most of the modern complications with very few if any benefits to the owner driver.

17 hours ago, J.R. said:

I cannot imagine any scenario where engine oil could leak from flywheel bolts.

There was an engine (Mini or Rover) on the Barum Engines YouTube channel where the flywheel bolts go into the oil filled gallery on the rear main bearing or into the oil pan maybe. I can't recall exactly. 

 

Without the bolts it passed oil. With bolts not sealed it weeped.

 

It does happen...

Edited 7 February, 20251 yr by BlueWagon

1 hour ago, J.R. said:

every day is a learning day

Perhaps a reason to be a bit more hesitant before ridiculing stuff that 'sounds wrong'?

Hey

 

Yesterday i cleaned all oil i can see on engine.

 

Car has not been driving 12 hours, and there was no oil to see at the moorning.

So there is no oil leake when car is not driving.

 

I put paper on the security plactic (plastic under the engine) And drive around 100 km… Then i look angain and there was probably three droops from oil at the paper.

 

Should i leave it or should take to delaer to fix it? 

Is huge oil leake this?

 

Thanks for helping !!

I would leave that. Maybe keep some paper or cardboard under there (fixed to undertray somehow) to absorb the drips, so they don't go onto the road, or your driveway/garage.

 

It could be worth checking the positive crankcase ventilation (PCV) system is working correctly.  This helps eliminate, or at least reduce any gas pressure in the crankcase/sump/head which makes leaks less probable.

I don't know exactly how this system operates on your engine, so I can't suggest a method for checking it, but sometimes just loosening the oil filler cap while engine is idling, and observing whether it tends to be blown upward or sucked back down can give a useful indication. 

Edited 7 February, 20251 yr by Breezy_Pete
sp, as usual

5 hours ago, Breezy_Pete said:

Perhaps a reason to be a bit more hesitant before ridiculing stuff that 'sounds wrong'?

 

I can only get better!

 

If someone can explain to me what a new type engine with 147kw is when its at home (petrol? Diesel? capacity? engine code?) I can do some googling as it does not look like the TSB is going to be forthcoming.

 

Flywheel mounting bolts not being a blind hole and going into the crankshaft oil gallery drilling is a major design failure. I had hypothesised that could be the only way that oil could be present but did not imagine for a second that any manufacturer would be that daft, on the camshaft pulley with the oil pressure powered actuator mechanism I can understand the problem.

There is definetly not so much leake that will go to the road and to garage

 

That leake must not be new.  I have car not so long, but i  have do 3000 km. And there is no oil on floor in my garage.

I think in this time 3000 km if leake willbe huge i will have some oil on floor at the garage. I guess.

 

2.0 Tdi 147kw  DTU

Edited 7 February, 20251 yr by Seba800

Three drops of oil is nothing, but if you had cleaned well the engine you will find a way to get to see where it really comes from.

 

Oil is very tricky ... it can spread wide and you think are liters - or gallons - and instead is very little.

I had a leak in what I thought it was the front diff of my Range Rover, then I found it was weeping from above from the gasket of the valve covers, then I see now is leaking through the valley gasket (the center of the "V") but being too much I searched elsewhere and I found either the oil pressure sensor gasket or the oil relief, both next to tackle.

But - they are located in the front/right of the engine, and my drops are on the front left/left of the engine.

Which means oil not always leaks "top to down" like water ... no ... the miserable liquid likes to travel around.

 

If you like me hate oil leaks - and makes my wonder why I still love Land Rovers - then use the clean engine as a reference point. Good luck!

I haven't got the tpi to hand, as I only downloaded the data for my vehicle which is 1.5, but if you log into erwin you can easily find it. It mainly effected the smaller and older engines. As the others suggest you would have to remove the gearbox and make and inspection.