M140i oil change DIY

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Williams327
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M140i oil change DIY

Post by Williams327 » Sun Jul 15, 2018 4:52 pm

So my car just reached 10,000 miles and despite the onboard computer not requesting its first service until next year I thought id do an interim one myself.
Phil at Cotswolds BMW supplied me genuine bmw oil 7litres and oil filter with copper washer and o ring. £89 delivered :D

Tools needed
Torque wrench, ratchet with swivel attachment, 17mm socket, 32mm shallow socket (oil filter), flat bladed screw driver

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Firstly get the front end jacked up I used car ramps makes the job a lot easier.


Remove plastic engine cover simply pull up working your way round the edges. Remove oil filler cap to prevent a vacuum when draining oil, I always place a clean rag over the filler to prevent any debri falling into the engine



underneath the car now you'll see a small flap/window towards the back of the engine tray. Using a flat head screw driver twist the holder to enable you to pull the flap down and gain access to the drain plug

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17mm Socket undo the drain plug with a bucket below for the old oil to run into.

Imagescreen shot download

while the oil is draining using your 32mm socket remove the oil filter, is quite tight for space but perfectly managable. using a swivvell head attachment on your ratchet helps with access. Once the filters out it twists anti clockwise and pulls away from the filter housing, replace the rubber oring on the filter housing with the new one provided. Insert your new oil filter, using your new oil 'prime' the filter and the oring. Reinstall the filter and housing now it needs to be tightened to 25nm with your torque wrench

Imagepc screen shot
Imagehow to do a screenshot on a pc

Refit the sump plug with new copper washer, this also needs tightening to 25nm



Lastly fill with oil theres no dipstick to measure but it takes exactly 6.5litres you can check on your onboard computer afterwards to ensure correct amount is in there.

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Overall really easy job and for £89 worth doing in my opinion, you can see from the photo how black the oil is.
M140i 3 door Auto

Mods - JB4, LSD, underbody brace, Carbon MPE, PCW silencer, Decat, AFE intake, auto id mirrors>diffuser, kerscher splitter, carbon spoiler, Mp skirts>blades>grills, OZ ultraleggeras, H&R -25mm, M4 pads, braided lines

Jamesno1
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Re: M140i oil change DIY

Post by Jamesno1 » Sun Jul 15, 2018 6:43 pm

Given that the sensor can't detect if it's overfilled with oil you may want to stop at 5.5 or 6 litres and see what the screen shows before topping up to max a small amount at a time
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Williams327
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Re: M140i oil change DIY

Post by Williams327 » Sun Jul 15, 2018 6:56 pm

Jamesno1 wrote:
Sun Jul 15, 2018 6:43 pm
Given that the sensor can't detect if it's overfilled with oil you may want to stop at 5.5 or 6 litres and see what the screen shows before topping up to max a small amount at a time
You have to start the engine and drive for half an hour so this isn’t possible lol.

It takes 6.5litres exactly
M140i 3 door Auto

Mods - JB4, LSD, underbody brace, Carbon MPE, PCW silencer, Decat, AFE intake, auto id mirrors>diffuser, kerscher splitter, carbon spoiler, Mp skirts>blades>grills, OZ ultraleggeras, H&R -25mm, M4 pads, braided lines

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marco_polo
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Re: M140i oil change DIY

Post by marco_polo » Sun Jul 15, 2018 7:05 pm

Jamesno1 wrote:
Sun Jul 15, 2018 6:43 pm
Given that the sensor can't detect if it's overfilled with oil
It doesn't? That's disappointing, they always used to.
Silver F21 M135i - ManBox - HK - Adaptive + Eibach Pro's - BBS CH-R's - BMWP Drexler LSD - TMC Piggyback - M4 LCA's - aFe Dry Filter

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Williams327
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Re: M140i oil change DIY

Post by Williams327 » Sun Jul 15, 2018 7:08 pm

marco_polo wrote:
Sun Jul 15, 2018 7:05 pm
Jamesno1 wrote:
Sun Jul 15, 2018 6:43 pm
Given that the sensor can't detect if it's overfilled with oil
It doesn't? That's disappointing, they always used to.
If you look on the display it does have a bar above max which to me indicates it will tell you if there’s too much
M140i 3 door Auto

Mods - JB4, LSD, underbody brace, Carbon MPE, PCW silencer, Decat, AFE intake, auto id mirrors>diffuser, kerscher splitter, carbon spoiler, Mp skirts>blades>grills, OZ ultraleggeras, H&R -25mm, M4 pads, braided lines

Jamesno1
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Re: M140i oil change DIY

Post by Jamesno1 » Sun Jul 15, 2018 8:48 pm

Williams327 wrote:
Sun Jul 15, 2018 6:56 pm
Jamesno1 wrote:
Sun Jul 15, 2018 6:43 pm
Given that the sensor can't detect if it's overfilled with oil you may want to stop at 5.5 or 6 litres and see what the screen shows before topping up to max a small amount at a time
You have to start the engine and drive for half an hour so this isn’t possible lol.

It takes 6.5litres exactly
from min to max on the traditional dipstick was around 1 litre so you can do it no problem, and the engine only needs to be at normal operating temp so realistically 10 mins.
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Jamesno1
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Re: M140i oil change DIY

Post by Jamesno1 » Sun Jul 15, 2018 8:52 pm

I had read a technical bulletin that somebody posted on a forum from bmw which warned that the oil level sensor could not detect more than full. I'll try and find it and post a link. Ridiculous design.....
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Jamesno1
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Re: M140i oil change DIY

Post by Jamesno1 » Sun Jul 15, 2018 9:00 pm

Can't find the actual doc but the copied post below spells it out

"BMW oil sensor will alert you if you have too little or too much oil"....

Don't Think so...there's a document in the official BMW ISTA (Document # FUB-HIL-HI-0006) which covers all F series BMWs and Mini F54-57 models as well.... entitled "Oil Level Measurement" that details exactly what the sensor shows and what action is required. It covers "Oil level below minimum", "Oil level at minimum", "Oil level 1/4 above minimum", "Oil level 1/2 above minimum", "Oil level 3/4 above minimum" and "Oil level at maximum"

There is NO mention of an indication of "Oil level above Maximum" and while the document tells you when oil is to be added (oil level below minimum and oil level at minimum) it make NO mention of draining oil (like the owners manuals all say to do if "excess oil is added")!!!

In fact the last entry in the document "Oil level OK at maximum" says:

"Attention: The sensor does not identify overfilling !"

Which begs the question...if a tech screws up and pours in way too much oil...how are we to know???...And avoid the "...serious engine/catalytic converter damage" from over filling the engine oil that is warned about in our owners' manuals???????
BMW is risking some serious legal exposure here by not providing us with the knowledge we need to avoid loss!
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Jahjaman
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Re: M140i oil change DIY

Post by Jahjaman » Sun Jul 15, 2018 10:08 pm

We have had a member overfill oil by more than a litre. Sensor picked up nothing.

Don't rely on it for accuracy.

Great DIY thread!
Aussie M140i 5 door
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Williams327
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Re: M140i oil change DIY

Post by Williams327 » Mon Jul 16, 2018 7:46 am

Jamesno1 wrote:
Sun Jul 15, 2018 9:00 pm
Can't find the actual doc but the copied post below spells it out

"BMW oil sensor will alert you if you have too little or too much oil"....

Don't Think so...there's a document in the official BMW ISTA (Document # FUB-HIL-HI-0006) which covers all F series BMWs and Mini F54-57 models as well.... entitled "Oil Level Measurement" that details exactly what the sensor shows and what action is required. It covers "Oil level below minimum", "Oil level at minimum", "Oil level 1/4 above minimum", "Oil level 1/2 above minimum", "Oil level 3/4 above minimum" and "Oil level at maximum"

There is NO mention of an indication of "Oil level above Maximum" and while the document tells you when oil is to be added (oil level below minimum and oil level at minimum) it make NO mention of draining oil (like the owners manuals all say to do if "excess oil is added")!!!

In fact the last entry in the document "Oil level OK at maximum" says:

"Attention: The sensor does not identify overfilling !"

Which begs the question...if a tech screws up and pours in way too much oil...how are we to know???...And avoid the "...serious engine/catalytic converter damage" from over filling the engine oil that is warned about in our owners' manuals???????
BMW is risking some serious legal exposure here by not providing us with the knowledge we need to avoid loss!
Good find James! Slightly worrying though
M140i 3 door Auto

Mods - JB4, LSD, underbody brace, Carbon MPE, PCW silencer, Decat, AFE intake, auto id mirrors>diffuser, kerscher splitter, carbon spoiler, Mp skirts>blades>grills, OZ ultraleggeras, H&R -25mm, M4 pads, braided lines

Jamesno1
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Re: M140i oil change DIY

Post by Jamesno1 » Mon Jul 16, 2018 11:50 am

Yes its p*ss poor design is what it is. Our m135i flashed up low oil the other month and when I topped it up I just left it at 3/4 to make sure I never went over.

Wonder what would happen if car goes in for service, technician goes tonto and overfills the oil, car subsequently shits its pants a couple of month later and bmw won't fix under warranty. What a fight that would turn out
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