f11 530D Coolant change

[sams255 106]

Was checking the coolant and noticed that it was pink. Isn't BMW supposed to have blue G48 ? 

[Matthew Ashton 885]

58 minutes ago, sams255 said:

Was checking the coolant and noticed that it was pink. Isn't BMW supposed to have blue G48 ? 

You are correct.  I’d be looking to get that changed soon.

[sams255 106]

43 minutes ago, Matthew Ashton said:

You are correct.  I’d be looking to get that changed soon.

Anyone done the procedure at home ?  Or is it best for a specialist to do and just supply to fluid and de-ionised water. 

 

Saw the fluid cheap on autodoc.  

https://m.autodoc.co.uk/febi-bilstein/1879937

[HandyAndy_UK 223]

For something that simple I'd just do it myself. 

Had to do it on the E61 when I replaced the stat. I used premixed Comma G48 from Halfrauds.

[F10er 80]

I am interested to find this out too, BMW's process is to vacuum fill the system to avoid airlocks. I did buy a kit but not yet used  for this but did anyone actually do without it. I dont know if there is a bleed screw? There is also process called venting the system?

[sams255 106]

5 hours ago, HandyAndy_UK said:

For something that simple I'd just do it myself. 

Had to do it on the E61 when I replaced the stat. I used premixed Comma G48 from Halfrauds.

 

Halfrauds also do a coolant change for 40 pounds. 

 

Couldn't find a drain bolt either so will have to look into it which hose will need taking off

[HandyAndy_UK 223]

On E61/N53 you drop the radiator bottom hose to drain.

Once refilled there is a self-bleed process dye to the electronic coolant pump. IIRC it's something like set heater to mid heat, ignition on, (don't start) press accelerator to the floor and hold for at least 12 secs then release. The system will then go into a self-bleed sequence that can take up to 20 mins.

No idea if the F series has a similar function though.

 

At worst just revert to basics... fill system and leave the cap off. Heaters to max and run the engine. Check and top up as it comes up to temperature. Once it's very hot at the vents and no longer needs topping up, you're done.

 

[sams255 106]

On 03/12/2020 at 23:16, Matthew Ashton said:

You are correct.  I’d be looking to get that changed soon.

 

Got it on a ramp to do the job. But saw a pink patch a mate of mine said the radiator looks like its leaking and I shouldn't change the coolant otherwise it could just come pissing out. 

 

The coolant level hasnt gone down and it isn't wet it's just a pink patch. so am I looking at a new radiator ?

 

That's on the right hand side btw

[HandyAndy_UK 223]

Not even moist... coolant level not dropping.... all's fine, go ahead with the fluid change.