335d burning oil and my time with BMW Dealers

Hi all

My tale of woe

Bought a 4 year old F30 335d love the car to be fair. Bought on 24k miles. I do about 350 miles a week mostly motorway.

Drove 9k and in to a service. Drove another 9k and low oil light came on put the 1 ltr in and took it to BMW dealer where I bought it under warranty. They changed the Heat Exchanger related gaskets etc £1400 I paid £250 and off I went. 4k later oil light on again ,took it back to them ,spanner in works I overfilled via looking at manual dipstick so that showed on their software.They thought I had just messed up and that no oil had been used ,which I knew not the case. So off I go no cost to me off I went.

3k later oil light low put a ltr in.Took it to the dealer I have used for 16 years they said I had not had a software update for a long time did that and sent on my way saying that should sort it.

2.6k miles on comes the light .i had been checking both manuel and the Idrive so knew that it was losing oil. Back to my BMW Dealer this time they changed the rocker cover and ancillery parts "that will have fixed it sir" Now here I am 2500 miles on and manual dipstick down to minimum and showing qtr on the idrive. Booked in for 20th may.I am off to cornwall for a few days tuesday and have the oil in the boot ready for the yellow oil light

So this will be my 5th visit to get this sorted out. I have been given the old nonsense " but the tolerance is 600 miles per ltr sir " something like that figure, may be less. My argument is 600 miles per ltr driving round a racetrack maybe. My 120d did 120k with no oil loss my 330d did 130k with not a drop of oil ever used either . As I said to them it cant be normal for my car it is getting worse 9k,4k.3k,2.6k

To be fair to the dealer when I bring it back in May they are not charging me my £250 excess.

I also understand that it really does not appear to be losing oil but is burning oil and that must be a needle in a haystack to find out why.

Just venting really on this. I have had enough 5th visit coming up ,any thoughts or comments would be appreciated.I get on great with the service reception people and the Head Tech comes out and chats and really listens so I am not going to lose the plot just tell them this has to be the last time. But as I say not easy to find and I guess re warranty they have to do one thing at a time that may be the cause? I am wondering what my parting shot should be as I walk out the Dealer after dropping off,cannot think of anything magic apart from" this has to be the last time" ,any ideas without being antagonistic?

Thanks for reading

EDIT I know I would be teaching them to suck eggs ,coals to Newcastle ETC. but anyone on here who knows what they are doing who can give me some ideas to tell them to look for?

Rottenegg,appreciate your thoughts. Only done 24k in 3/4 years before I bought from dealer it had been a BMW head office car I have a feeling it will never be found

Thankyou

I will,thankyou

..

That sounds a plan but surely leading to a never ending pot of diagnostic money. Finding where oil is burning has to be a needle in a hystack. BMW have changed quite a few bits and pieces on this hunt.Heat exchangers,rocker cover etc. Whatever happens they have told me they wont charge my excess so I have to plough on

Op here just took a call from bmw. So if they do this that and the other ie take off Turbo's etc and they find nothing its down to me which could be £2500 plus so I am going to have to live with it. As they say in 2024 it is what it is

OP again, just purchased Forte oil fortifier ,will stick that in 2 bottles it seems, see how it goes. Mind you at the moment oil is at the top so I am worried about adding and going into overfill yellow warning.

It is a PITA I do about 400 miles a week and love this car. The curtesy car was a 73 320i and I found it hard work ,the steering, the suspension ,the idrive smartphone. The darkness of the inside. I just have no idea what I can replace my car with cream interior and sunroof ,it is so light in there such a nice place to be. BMW want over £40k for that new 320i .

I looked around the used cars at the dealership,all so bland for the money they want. Been with BMW for 17 years just cannot see me getting another one just too expensive and merrrgh looking I was behind a convertible E46 the other day silver hood down in the sun and it really looked great.