Coolant

For the M Powered Z4 derivatives

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beemingallover
Joined: Sat 26 Jul, 2014 14:10
Posts: 27

  Z4 M roadster

Coolant

Post by beemingallover » Sat 03 Jun, 2017 09:52

I have a 2009 Z4M 62k mls, the radiator coolant has never been changed, is it necessary to change/flush the system from time to time?
Thanks

Del
Joined: Sat 19 Nov, 2011 18:35
Posts: 2119

  Z3 roadster 1.9

Re: Coolant

Post by Del » Sat 03 Jun, 2017 11:32

I don't know what your handbook says but my 1998 z3 one talks about changing it every three years. However, my wife's 2010 BMW Mini uses the same, inky-blue antifreeze and the service regime is now to leave it in indefinitely unless it discolours. My daily driver Audi uses pink and that gets left indefinitely as does similar pink in newer Toyotas and Citroens. Confused? Not surprised, seems to be a constantly moving goalpost :D :D

If it were me I would consider a change now as it is a high performance M engine which generates a lot of heat. :)

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beemingallover
Joined: Sat 26 Jul, 2014 14:10
Posts: 27

  Z4 M roadster

Re: Coolant

Post by beemingallover » Sat 03 Jun, 2017 12:09

Thanks, sound advice.

Cooper01
Joined: Tue 29 Apr, 2014 09:06
Posts: 152

  Z3 roadster 3.0i

Re: Coolant

Post by Cooper01 » Sat 03 Jun, 2017 13:22

The new car service manual specifies that the coolant should be renewed after every 3 years for the ///M and 4 years for Z3. This is a notation in the Service 1 part of the book where it also states that the coolant level should be checked at service level 1.

As preventative maintenance it is a good idea to replace the water pump [based on miles done]. It is an easy job and the part is inexpensive.

Cheers,

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