35D oil problem

[l8tbrake]

Anyone have any oil burning issues with there 35D? I had to add 1liter of oil around the 11,000 km (6800 miles). When I asked the dealer they said that was normal especially during breakin. They also mentioned it was normal given the long intervals for oil changes.

[Penguin]

That is quite normal consumption for any engine. As they said, particularly during break-in.

http://autorepair.about.com/od/gener...l/bldef587.htm

http://www.pistonslap.com/tsb/010601011A.pdf

[l8tbrake]

thanks.

[spyderdoc]

Just added a quart at 7300mi (35d). Runningperfectly otherwise

[Lubehead]

Not only is it nothing to be concerned about, in many ways it is actually a good thing, especially when a long drain interval is the goal. While excessive consumption is obviously bad and hard on the wallet, the addition of the quart helps to replenish and stabilize the additive package. Especially the TBN (Total Base Number) which helps in neutralizing acids. In addition the boost to dispersancy capability(ability to keep contaminants in suspension -particularly soot) is always helpful.

[XXX555]

I8 and Spyder, did your check oil dashboard light come on or did you dipstick to find out your X5d was low?

[FunfDreisig]

Speaking of dip sticks and idiot lights...

Does anyone know (or have a good idea) why BMW recommends waiting until the 35d engine is a full quart low before adding oil?

Some possible 'reasons'...
It is dangerous to over fill a diesel engine.
It makes it easy to just 'add a quart'.
It reduces the number of times owners show up at the dealer for them to add a little oil.
They don't want us to get our pretty little fingers dirty checking the oil level with the obscurely located dip stick.

Call me old school but I feel like I've neglected any of my vehicles that get a full quart low before I top it up.

Funf Dreisig

[grover432]

Originally Posted by Lubehead

Not only is it nothing to be concerned about, in many ways it is actually a good thing, especially when a long drain interval is the goal. While excessive consumption is obviously bad and hard on the wallet, the addition of the quart helps to replenish and stabilize the additive package. Especially the TBN (Total Base Number) which helps in neutralizing acids. In addition the boost to dispersancy capability(ability to keep contaminants in suspension -particularly soot) is always helpful.

But it is bad for the environment. I think that is why 2 stroke engines are disappearing - they can't meet emissions regulations, no matter how thin the mix is. I say if you want clean oil, you should shorten the service interval and recycle the oil, not burn it and keep replenishing with new.

[Penguin]

Primary reason, I suspect, is that it will not hurt an engine to go one quart low, and if it is one quart low, you can dump the entire quart in and toss the empty bottle, e.g., simplicity and convenience.

And also, as you note, it removes the possibility of accidentally overfilling since all you've got in your hand is a single quart.

[l8tbrake]

xxx555 the warning light came on telling me to add a quart. it actually came on intermittently at first and had me a bit worried. Maybe I'm also old school but when the oil gets low you top it up. I would have assumed this was the case especially since its a turbo. I did bring it to the dealer after light had gone out and they said to wait until it came on and stayed on. At that stage the level showing in the diagnostic screen had two bars.

other than the oil issue and a pesky nav problem which the dealer is looking at this friday, it runs perfectly.