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Discussion Starter · #1 ·
Hey everyone!
Just bought used certified pre-owned 535i f10 with 55k miles. I've just put 1000miles since i got it and top off oil notification popped on my screen. Now that is little weird to me being cerified vehicle, since they swear how certified cars go through numerous inspections and controls. Message stated to put 1 quart of oil which i did and measured it again and its all good. My question is should i be worried about something that i dont see? Did anyone else have any idea or similar 'problem' like this?
Also no oil leaks anywhere.

Thanks bimmer ppl, every answer is highly appreciated!
 

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The V8's (550i) are notorious for excessive oil use. It's generally not been a problem with the in-line six or four cylinder engines (535i, 535d, 538i in the U.S.). Hopefully, they just short filled the crank case if/when they did the last oil change. Your engine takes 6.5 liters of oil. There can be a problem where the wrong oil or oil left in there too long can develop "varnish" (a brown coating on the metal parts inside the engine). Varnish you can see is just annoying. But, varnish can also cause the piston rings to stick in the compressed position (against the piston) instead of being free to open and produce a seal against the cylinder walls. This will cause low compression and massive oil consumption.

Look down your oil fill hole. (This is something you should do with every prospective used car.) The metal parts should be clean, except for any oil laying in a low spot. (The white plastic parts will turn brown after being exposed to and absorbing oil, but that's normal.) It there's varnish you might have a problem, either now or eventually. If there's sludge (three dimensional, black crud), you have a neglected engine. A friend of Frau Putzer's is selling an almost pristine 2003 (E39) 530i. I was interested in it as a beater until I looked down the oil fill hole. After that.... "No thanks!"

At 46k miles, my 535i uses about 700ml between 7.5k mile oil changes. I do my own oil changes and measure the volume of the oil I drain out.

Also, the oil level sensors can get contaminated and cause false "low oil" alarms. The only way to prove a sensor is bad is to measure the oil volume when it's drained out and see if it's consistent with what the electronic oil level measurement said immediately beforehand. It there is a problem, that should be covered under the CPO warranty.

Depending on the model year, your F10 535i requires either ACEA A3/B3 or BMW Long Life 01 (LL-01) oil. LL-01 oil is better, and BMW raised the requirement to LL-01 in MY 2015. Not all synthetic oil is LL-01. The easiest, if not necessarily the cheapest place to get LL-01 is on-line from BMW parts vendors (dealers or BMW specialist vendors). My last batch was about $9/liter, on-line, from a BMW dealer. If you get an indy' shop to do you oil changes, take them the oil and filter. That should prevent you from ending up like Frau Putzer's friend with the E39 530i.
 

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Not sure I agree with the above, the inlines are known for a couple low volume gasket leaks.
To the OP, you may not necessarily spot leaks from underneath as your car has a "belly pan" covering the front portion.
Also, the CPO inspection is not as rigorous as you think.
Do a forum search and some research to lead you in the next step.
 

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Hey everyone!
Just bought used certified pre-owned 535i f10 with 55k miles. I've just put 1000miles since i got it and top off oil notification popped on my screen. Now that is little weird to me being cerified vehicle, since they swear how certified cars go through numerous inspections and controls. Message stated to put 1 quart of oil which i did and measured it again and its all good. My question is should i be worried about something that i dont see? Did anyone else have any idea or similar 'problem' like this?
Also no oil leaks anywhere.

Thanks bimmer ppl, every answer is highly appreciated!
I think it is a common message if you browse this forum. I got CPO 535 with 37K. I got the "add one quart oil" message before the oil changed at 52K. I had another oil change at 63K. This time I did not get the"add one quart oil" before the oil change.
 

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Discussion Starter · #6 ·
The V8's (550i) are notorious for excessive oil use. It's generally not been a problem with the in-line six or four cylinder engines (535i, 535d, 538i in the U.S.). Hopefully, they just short filled the crank case if/when they did the last oil change. Your engine takes 6.5 liters of oil. There can be a problem where the wrong oil or oil left in there too long can develop "varnish" (a brown coating on the metal parts inside the engine). Varnish you can see is just annoying. But, varnish can also cause the piston rings to stick in the compressed position (against the piston) instead of being free to open and produce a seal against the cylinder walls. This will cause low compression and massive oil consumption.

Look down your oil fill hole. (This is something you should do with every prospective used car.) The metal parts should be clean, except for any oil laying in a low spot. (The white plastic parts will turn brown after being exposed to and absorbing oil, but that's normal.) It there's varnish you might have a problem, either now or eventually. If there's sludge (three dimensional, black crud), you have a neglected engine. A friend of Frau Putzer's is selling an almost pristine 2003 (E39) 530i. I was interested in it as a beater until I looked down the oil fill hole. After that.... "No thanks!"

At 46k miles, my 535i uses about 700ml between 7.5k mile oil changes. I do my own oil changes and measure the volume of the oil I drain out.

Also, the oil level sensors can get contaminated and cause false "low oil" alarms. The only way to prove a sensor is bad is to measure the oil volume when it's drained out and see if it's consistent with what the electronic oil level measurement said immediately beforehand. It there is a problem, that should be covered under the CPO warranty.

Depending on the model year, your F10 535i requires either ACEA A3/B3 or BMW Long Life 01 (LL-01) oil. LL-01 oil is better, and BMW raised the requirement to LL-01 in MY 2015. Not all synthetic oil is LL-01. The easiest, if not necessarily the cheapest place to get LL-01 is on-line from BMW parts vendors (dealers or BMW specialist vendors). My last batch was about $9/liter, on-line, from a BMW dealer. If you get an indy' shop to do you oil changes, take them the oil and filter. That should prevent you from ending up like Frau Putzer's friend with the E39 530i.
Looked down the oil fill, everything is clean which is good news(thanks for indicating on that). After topping of oil with Longlife 01 standardized Castrol, i drove it to see if sensor will indicate same thing, but no problems after that. So hopefully they just didnt do a great job inspecting the fluids. I still have 9k miles till next service due, but i do oil changes on all cars i own and did own. If sensor starts stating the same thing, ill take it to the dealer for them to take care of that since its CPO.
Thanks
 

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2018 540i MSport
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You know how to check the level with the electronic dipstick via iDrive? If the add oil indicator comes on, I would expect to see the level on the electronic measure to be below the "max" indication. I never added oil between fills on my 2014 535i, but I did add oil to top off my 2011 535i a couple of times. If the behavior is the same now, be careful, because the electronic level indicator takes some time to respond to a top-off. I think there is some serious data buffering going on, to avoid the level indicator jumping around a lot -- I seem to remember it could take a few miles of driving for it to increase back to the "max" mark.
 

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I'll also mention that from my experience, the electronic picture of the dipstick only has 5 positions: Low, 1/4, 1/2, 3/4, Full. I've added oil and never seen it go over Full, and from there its first drop is to "3/4."

It is as simple and child-friendly as the green tire/orange tire TPMS picture.
 

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2018 540i MSport
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I'll also mention that from my experience, the electronic picture of the dipstick only has 5 positions: Low, 1/4, 1/2, 3/4, Full. I've added oil and never seen it go over Full, and from there its first drop is to "3/4."

It is as simple and child-friendly as the green tire/orange tire TPMS picture.
I've sold my car already, waiting for my 540i to arrive, so I can't go look IIRC, there is space above the Max level indicator. In any event, you don't want to over-fill. The times I topped off, it had reached the 3/4 full mark.
 
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