Did a complete coolant flush today.
Coolant was 10 years old but very few miles on it.
The threads about rust in the system and deposits had me really worried as my car got some tap water I must confess.
I filled it with 1:1 mix of BMW coolant and distilled water.
The coolant hoses were perfectly clean and the inside of the radiator looked perfect.
I did not take the water pump out as I would have to buy gaskets and all if I did. I'll leave it alone.



I have a 800 miles road trip planned in our local mountains with my wife over the weekend. That will be the car's first proper shakedown.
Coolant was 10 years old but very few miles on it.
The threads about rust in the system and deposits had me really worried as my car got some tap water I must confess.
I filled it with 1:1 mix of BMW coolant and distilled water.
The coolant hoses were perfectly clean and the inside of the radiator looked perfect.
I did not take the water pump out as I would have to buy gaskets and all if I did. I'll leave it alone.



I have a 800 miles road trip planned in our local mountains with my wife over the weekend. That will be the car's first proper shakedown.
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