Green coolant?

[Craze]

My 2012 m5 before me was 1 owner car full bmw history and i noticed that the coolant is green not bmw blue coolant

I have inclusive service for 1 yr and they refuse to pay to fix it

Any idea how i ended up with green coolant? I cant see kermit the frog in there

[Craze]

Well this get strange

The coolant was fluorescent green like old school coolant

The techs flushed and flushed and filled with bmw coolant concentrate and the proper water mix
Its blue in the bottle but slightly green color once diluted

So now im unsure if mine was correct but just old or if it was infact wrong

Anyway flushing and filling both coolants was a big job
Its all done now

[KMORGSM5]

Odd they wouldn't dilute it with water.

[TLK]

BMW coolant is still blue when diluted so it wasn't that. Good to flush it so you know what you have because old school green coolant isn't advised for these cars.

[Craze]

They flushed and flushed and its slightly green
But genuine oem coolant

[Craze]

I drawed some coolant out and it is blue
It gives the appearance of green in the reservoirs

[TLK]

Originally Posted by Craze

I drawed some coolant out and it is blue
It gives the appearance of green in the reservoirs

Now it all makes sense...

The min/max gauge in the tank is yellow, and...

Blue and yellow make green.

That why people are seeing green. I though people were emptying it into a pan and seeing green fluid which really would be strange.