Coolant loss B58

Si-M240i · 01-19-2021, 06:02 AM

Well after several months of NFF investigations and multiple pressure tests, BMW Germany have authorised a new turbo and exhaust manifold for my car. Not sure why the exhaust manifold unless the turbo mounting is different.

For reference, I was using 140ml of coolant every 1,000 miles. This is basically from min to max in the expansion tank. So over a 20,000 mile service interval this equates to 2.8 litres .... 1.4 litres every 10,000 miles.

Hopefully these monthly top ups are behind me

jliuod · 01-19-2021, 11:24 AM

What year is your car?

Si-M240i · 01-19-2021, 11:52 AM

Quote:

Originally Posted by jliuod

What year is your car?

2018 LCI. UK car

dradernh · 01-19-2021, 01:16 PM

Quote:

Originally Posted by Si-M240i

BMW Germany have authorised a new turbo and exhaust manifold for my car. Not sure why the exhaust manifold unless the turbo mounting is different.

IIRC, the turbo and the exhaust manifold are an integrated unit.

kianf22 · 01-20-2021, 03:53 AM

Quote:

Originally Posted by Si-M240i

Well after several months of NFF investigations and multiple pressure tests, BMW Germany have authorised a new turbo and exhaust manifold for my car. Not sure why the exhaust manifold unless the turbo mounting is different.

For reference, I was using 140ml of coolant every 1,000 miles. This is basically from min to max in the expansion tank. So over a 20,000 mile service interval this equates to 2.8 litres .... 1.4 litres every 10,000 miles.

Hopefully these monthly top ups are behind me

So the coolant level in the main tank was fine? Only the expansion tank level would go down?

jzeiler4 · 01-20-2021, 10:51 AM

Quote:

Originally Posted by kianf22

So the coolant level in the main tank was fine? Only the expansion tank level would go down?

The main tank is for engine cooling the smaller tank is for the intercooler. Separate systems.

Si-M240i · 01-20-2021, 12:39 PM

Quote:

Originally Posted by kianf22

Quote:

Originally Posted by Si-M240i

Well after several months of NFF investigations and multiple pressure tests, BMW Germany have authorised a new turbo and exhaust manifold for my car. Not sure why the exhaust manifold unless the turbo mounting is different.

For reference, I was using 140ml of coolant every 1,000 miles. This is basically from min to max in the expansion tank. So over a 20,000 mile service interval this equates to 2.8 litres .... 1.4 litres every 10,000 miles.

Hopefully these monthly top ups are behind me

So the coolant level in the main tank was fine? Only the expansion tank level would go down?

Nope the large expansion tank for the engine and turbo cooling was dropping from max to min every 1000 miles. The small expansion tank was ok and that is for the water to air charge cooler in the intake manifold (intercooler)

513Mugsy · 01-20-2021, 06:41 PM

So did the dealer figure out if the coolant was running back into the intake or exhaust then? One way is better than the other, but neither is obviously good for the car. Glad they found a possible fix for you.

Si-M240i · 01-21-2021, 01:52 PM

Quote:

Originally Posted by 513Mugsy

So did the dealer figure out if the coolant was running back into the intake or exhaust then? One way is better than the other, but neither is obviously good for the car. Glad they found a possible fix for you.

They found evidence of water stains in the exhaust down pipe and sent pictures to BMW Germany and they approved the turbo Change. Fingers crossed my monthly coolant top ups are behind me now 👍

d0ugmac1 · 02-11-2021, 04:41 PM

Quote:

Originally Posted by Si-M240i

They found evidence of water stains in the exhaust down pipe and sent pictures to BMW Germany and they approved the turbo Change. Fingers crossed my monthly coolant top ups are behind me now 👍

Hi, I'm chasing very similar gremlins in my 2018 LCI 340iX (june 2018). Can you share any updates on whether the coolant is now holding? Also any further details on the paperwork involved with the warranty work? SIBs etc?

Thanks so much for posting your story.

iv-128i · 02-11-2021, 05:33 PM

Quote:

Originally Posted by d0ugmac1

Quote:

Originally Posted by Si-M240i

They found evidence of water stains in the exhaust down pipe and sent pictures to BMW Germany and they approved the turbo Change. Fingers crossed my monthly coolant top ups are behind me now 👍

Hi, I'm chasing very similar gremlins in my 2018 LCI 340iX (june 2018). Can you share any updates on whether the coolant is now holding? Also any further details on the paperwork involved with the warranty work? SIBs etc?

Thanks so much for posting your story.

+1

d0ugmac1 · 02-24-2021, 10:05 PM

bump

Jnat · 02-25-2021, 07:41 AM

So Germany has to authorize even just a turbo replacement? Engine i understand and that's common in the industry at this point but not the turbo, that's interesting if that's true...

jzeiler4 · 02-25-2021, 08:04 AM

Quote:

Originally Posted by Jnat

So Germany has to authorize even just a turbo replacement? Engine i understand and that's common in the industry at this point but not the turbo, that's interesting if that's true...

Remember he is in England, I presume BMWNA would be the authority for us in the States.

Jnat · 02-25-2021, 05:13 PM

Good point...
Still, i question why all that authorization power is needed for a turbo.

jzeiler4 · 02-25-2021, 08:51 PM

The turbo is not cheap since it also includes the exhaust manifold.

Lew Carrum · 02-27-2021, 04:03 AM

Quote:

Originally Posted by jzeiler4

The turbo is not cheap since it also includes the exhaust manifold.

Vipers nest that lot, mechanics will need long fingers to access some of those bolts!!

WRCWIA · 02-28-2021, 08:03 PM

youtube "B58 Turbo", and you'll get some vids on turbo installation...it's not bad at all...and you can remove the turbo from the exhaust manifold...it's not integrated/one piece

jzeiler4 · 03-01-2021, 07:28 AM

Quote:

Originally Posted by WRCWIA

youtube "B58 Turbo", and you'll get some vids on turbo installation...it's not bad at all...and you can remove the turbo from the exhaust manifold...it's not integrated/one piece

True but BMW does not separate it in the parts list so it is all or nothing.

01-19-2021, 06:02 AM	#1
Si-M240i Major 137 Rep 1,450 Posts Drives: M240i LCI Join Date: Aug 2008 Location: England iTrader: (0)	Well after several months of NFF investigations and multiple pressure tests, BMW Germany have authorised a new turbo and exhaust manifold for my car. Not sure why the exhaust manifold unless the turbo mounting is different. For reference, I was using 140ml of coolant every 1,000 miles. This is basically from min to max in the expansion tank. So over a 20,000 mile service interval this equates to 2.8 litres .... 1.4 litres every 10,000 miles. Hopefully these monthly top ups are behind me __________________ M240i LCI (Mineral Grey):- M2 Door Mirrors, M2 Black Kidney Grills, Lower grille inserts, MP Exhaust, Dinan Carbon Fibre CAI, hot climate intake elbow
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01-19-2021, 11:24 AM	#2
jliuod Second Lieutenant 147 Rep 203 Posts Drives: 21' M440I Join Date: Aug 2014 Location: northern california iTrader: (0)	What year is your car?
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01-20-2021, 06:41 PM	#8
513Mugsy Just a dude... 3 Rep 24 Posts Drives: BMW M240i xDrive Join Date: Jan 2020 Location: Cincy, OH iTrader: (0)	So did the dealer figure out if the coolant was running back into the intake or exhaust then? One way is better than the other, but neither is obviously good for the car. Glad they found a possible fix for you.
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02-24-2021, 10:05 PM	#12
d0ugmac1 Solutioneer 0 Rep 5 Posts Drives: 2018 340i 6MT Xdrive Join Date: Oct 2019 Location: Saltbelt iTrader: (0)	bump
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02-25-2021, 07:41 AM	#13
Jnat DisplacementReplacement 394 Rep 1,092 Posts Drives: 2020 X3M Join Date: Sep 2012 Location: Jersey Shore iTrader: (0)	So Germany has to authorize even just a turbo replacement? Engine i understand and that's common in the industry at this point but not the turbo, that's interesting if that's true... __________________ 2020 X3M /// MHD Tune Prior Bimmers 2017 240XI Hybrid / FBO / MHD E40 2015 235XI FBO / MHD E30 2009 335XI FBO / COBB / E30
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02-25-2021, 05:13 PM	#15
Jnat DisplacementReplacement 394 Rep 1,092 Posts Drives: 2020 X3M Join Date: Sep 2012 Location: Jersey Shore iTrader: (0)	Good point... Still, i question why all that authorization power is needed for a turbo. __________________ 2020 X3M /// MHD Tune Prior Bimmers 2017 240XI Hybrid / FBO / MHD E40 2015 235XI FBO / MHD E30 2009 335XI FBO / COBB / E30
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02-25-2021, 08:51 PM	#16
jzeiler4 Lieutenant 319 Rep 533 Posts Drives: 2021 M240i xDrive vert Join Date: Aug 2020 Location: Hazel Green, AL iTrader: (0)	The turbo is not cheap since it also includes the exhaust manifold. Attached Images
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02-28-2021, 08:03 PM	#18
WRCWIA Enlisted Member 10 Rep 30 Posts Drives: 240Ix Join Date: Jul 2020 Location: North A iTrader: (1)	youtube "B58 Turbo", and you'll get some vids on turbo installation...it's not bad at all...and you can remove the turbo from the exhaust manifold...it's not integrated/one piece
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