https://www.babybmw.net/forum/viewtopic.php?t=94947

 

Thanks Marco.

Presume the 140 is as straight forward as the 135, (self bleed) but I know there are multiple cooling circuits, so recon I'lll need to pull pipes off in more than one place to drain. This can wait until the summer.

I need to top up now, so will get some genuine BMW fluid and use that (picking up on your comment about avoiding mixing brands in the other thread).

 

The TIS for the B58 states the refill procedure must be performed with a vacuum fill tool. Previous engines this has been included in the instructions but there was never a warning message stating it was essential, which there is for the B58 in the M140i.

I've just bought a vacuum refill kit to do a coolant flush on the M2 as it's over three years old now. It's a bit more hassle and expense so to be honest, just take it to a dealer or Indy and pay for the coolant change. No idea the cost but it's not more than an hour of labour.

 

https://www.newtis.info/tisv2/a/en/...sv2/a/en/f20-m140i-sha/repair-manuals/17-cooling/17-00-cooling-check/1VnZ6NVZ30

See warnings towards the bottom of page. States the use of vacuum full procedure is mandatory to avoid engine damage. Personally I wouldn't take the chance on just relying on the self bleed procedure which just operates the pump to make the coolant flow. There must be lost of nooks and crannies where air can become trapped in the B58. Plus it's a more complex cooling system than N55 with two expansion tanks.

 

Wow, thanks for that. It appears to be a bit of a faff, but easy with the special tool/adapters.
What did they cost? Can't see that I will get them for a once every three years event, but might come visit you and bribe you with beer to give me a hand and use yours. Surrey labour costs from BMW are somewhat prohibitive, but the Indy route may be my best option.

No worries for another six months or so though.

 

If its any help, I got a quote off Cooper Croydon couple of years back. Had to beg & plead 3 times before they could come up with a figure (kept saying it didnt need to be done etc). Came to £107.25 of which £90 was labour (all figures exVat). But perhaps its simpler on my old N47 engine?

 

I can see vacuum kits for about £25 on flee bay, but not clear about adapters to fit the 140. Think I will go that way rather than main dealer. More fun 😂. But no rush.

 

The vacuum refill kit I bought was £68 off eBay and it came with adapters to fit all makes of car. Bear in mine you need access to an air supply so if DIYing you would need a mini air compressor to generate the vacuum. If you don't have one add another £80 in for one of those. An Indy would be the better route then.

I bought one because I like the satisfaction of wrenching on my own cars and looked at it as an investment. But admittedly it's not cheap!

 

Would be the same for me. Satisfaction.

I have a compressor already, but for a kit that will be used once only, not sure about spending £60+

I'll have a look on eBay every now and then and maybe a BMW specific kit will pop up.

 

Anyone got a link to these kits?

 

Here is an example

https://www.ebay.co.uk/itm/Radiator...79115479&itm=312761927871&pmt=1&noa=0&pg=2386202&_trksid=p2386202.c100677.m4598

Loads on the 'bay.

 

Here is an example

https://www.ebay.co.uk/itm/Radiator...79115479&itm=312761927871&pmt=1&noa=0&pg=2386202&_trksid=p2386202.c100677.m4598

Loads on the 'bay.

That looks like the kit I've bought. Not tried it out yet but plan to give it a go in the next couple weekends.

 

Dp they definitely fitted the b58 coolant tanks?

 

Dp they definitely fitted the b58 coolant tanks?

The part number for the B58 & N55 expansion tank cap is the same and is also used on E8x series cars which this kit says it fits, so should be fine.

With the B58 having two expansion tanks you would just need to confirm both caps are the same.

 

I've read this post and am a noob when it comes to maintaining the B58 engine. I have owned the car since new from June last year. Is there sufficient anti-freeze in the engine already or do I need to add some, if so is the procedure different than for other engines?

 

Yep...as long as the levels are still fine, and it's the original coolant, it'll be fine.

 

I've read this post and am a noob when it comes to maintaining the B58 engine. I have owned the car since new from June last year. Is there sufficient anti-freeze in the engine already or do I need to add some, if so is the procedure different than for other engines?

The B58 has a reputation for using water. So worth a periodic look.

I read another interesting thread, that pointed out the caps can be tight to remove. They are O ring sealed rather than a flat gasket. So they can grab as you unscrew the two caps. Before putting them back on, clean them and give then a mearest smidgen of silicon grease. Just a wipe to lubricate and protect. (Only use rubber o ring friendly grease, and not so much that there is any excess, wipe it clean just leaving a sheen)

The caps just unscrew and the min max levels are clearly visible when the caps are off. DO IT WITH ENGINE COLD.... Do BOTH caps. (Next to each other towards front left side of the car).
Clean the caps (see that white deposit? Looks like evaporated coolant, so my guess is this is eveidence that hot steam can slowly escape and thus the levels go down over time. Lubing the o rings as above may prevent this re-occuring)
Top up with genuine BMW coolant 50:50 blend with distilled water.
The caps screw back on to a 'positive engagement' so no guesswork about how tight they need to be.
Simple.

I bought a 1.5l bottle of BMW concentrate fluid yesterday for £12 at Cooper Cobham. See plenty on eBay for about £10 a bottle. I get my distilled water from our tumble drier.

 

I've read this post and am a noob when it comes to maintaining the B58 engine. I have owned the car since new from June last year. Is there sufficient anti-freeze in the engine already or do I need to add some, if so is the procedure different than for other engines?

The B58 has a reputation for using water. So worth a periodic look.

I read another interesting thread, that pointed out the caps can be tight to remove. They are O ring sealed rather than a flat gasket. So they can grab as you unscrew the two caps. Before putting them back on, clean them and give then a mearest smidgen of silicon grease. Just a wipe to lubricate and protect. (Only use rubber o ring friendly grease, and not so much that there is any excess, wipe it clean just leaving a sheen)

The caps just unscrew and the min max levels are clearly visible when the caps are off. DO IT WITH ENGINE COLD.... Do BOTH caps. (Next to each other towards front left side of the car).
Clean the caps (see that white deposit? Looks like evaporated coolant, so my guess is this is eveidence that hot steam can slowly escape and thus the levels go down over time. Lubing the o rings as above may prevent this re-occuring)
Top up with genuine BMW coolant 50:50 blend with distilled water.
The caps screw back on to a 'positive engagement' so no guesswork about how tight they need to be.
Simple.

I bought a 1.5l bottle of BMW concentrate fluid yesterday for £12 at Cooper Cobham. See plenty on eBay for about £10 a bottle. I get my distilled water from our tumble drier.

Thanks for explaining. I have just read past threads about the B58 and coolant. The answers about what to do are a bit varied.

Do I have to use a vacuum refilling device to avoid damaging the engine? Some say tap water is fine but I will used distilled water as a precaution.

 

South East tap water is more calcium and magnesium than H2O, don't put that in your engine!

No need for vacuum systems for topping up, that's only for the 4 year full change.

 

South East tap water is more calcium and magnesium than H2O, don't put that in your engine!

No need for vacuum systems for topping up, that's only for the 4 year full change.

Thanks Marco. Yeah the water in the south east is nasty. I regularly descale various bits around the house.

 

The B58 has a reputation for using water. So worth a periodic look.

I've had to top up the smaller tank on my M140i, its 9 months old and 7k miles. If I was not warned about this earlier I guess there is a chance of running it dry.

 

B58 engine shouldnt use any coolant. If yours is using coolant then you have something wrong.

Mine used coolant initially; I kept complaining and eventually it turned out to be a known issue, there was a service bulletin which stated if customer complains of coolant loss replace the turbo. They replaced my turbo and its not lost a single drop of coolant since.

 

B58

How many miles had yours done? I noticed mine had a top up on its first service. Will be keeping an eye on it.

 

I bought a 1.5l bottle of BMW concentrate fluid yesterday for £12 at Cooper Cobham. See plenty on eBay for about £10 a bottle. I get my distilled water from our tumble drier.

Were Cooper Cobham sure that's the correct coolant? On another thread, it's come to light that B58's need a new product called Frostox HT-12?

5.0L BMW 83192466484

 

I bought a 1.5l bottle of BMW concentrate fluid yesterday for £12 at Cooper Cobham. See plenty on eBay for about £10 a bottle. I get my distilled water from our tumble drier.

Were Cooper Cobham sure that's the correct coolant? On another thread, it's come to light that B58's need a new product called Frostox HT-12?

5.0L BMW 83192466484

I didn't ask... but following the above I have done a quick dig and found:
Coolant was changed across all our cars from 2019.
Both types can be mixed without issue (don't mix with the i3 type coolant though - can gel)
This link tells everything we need to know....

https://www.newtis.info/tisv2/a/en/...5-xdrive35d-sav_201202/repair-manuals/17-cooling/17-00-cooling-check/1VndAEbNUP

Phew ! Track day at Donnington on Monday, and with no time to flush the system the last thing I want to be thinking about is lumpy coolant!