[19G20]

Recently discovered that my coolant was brown in color. Anybody else have the same issue and does it warrant a coolant flush?

Thanks!

[AshtonPJT]

Originally Posted by 19G20

Recently discovered that my coolant was brown in color. Anybody else have the same issue and does it warrant a coolant flush?

Thanks!

Yea flush

[bouchy]

Is it G11 for M40i engine? That's weird. I had also big sediments and brown coolant, but because it was G12++ (pink) with "silicate" bag in the resevoir. Complete flush is necessary, including mechanical cleaning of the reservoir. Still it's a mystery what's in the radiator and heat exchanger.

[Leem40i]

Originally Posted by 19G20

Recently discovered that my coolant was brown in color. Anybody else have the same issue and does it warrant a coolant flush?

Thanks!

Thats not good at all and will most likely need more than a flush. A brown color can be a result of some type of corrosion in your system. If that's the case flushing won't fix it. How long has it been since the coolant was flushed and was it filled with BMW coolant?

[19G20]

Car is under warranty still. Dealer did flush. Thanks!

[19G20]

Nothing found from what dealer told me. They performed the flush. So I guess we will see. Thanks