Coolant drain and refill....What should I know!

  • Thread starter Thread starter bonzo
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bonzo

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Hi all. I guess as Zelda has an alloy engine, it's a good idea to regularly replace the anti freeze/water mix in the radiator to prevent corrosion as well as it's anti freeze function. What would you techies out there consider that interval should be? And can you run through the procedure for this, and the bleeding technique and anything else I ought to know.

Cheers m'dears

Bonzo.
 
Hi - Techie I am not - but I have done this job on my '98 M44 engine although there are slight variations on other years/ engines it is straightforward. The recommended change is every 3 years and I replaced mine with Comma `Exstream G48' solution.
If you look at this http://zroadster.org/wiki/bmw-z3/ma...52tu-thermostat-replacement-by-mike-fishwick/ then I think the pointers you need are contained in the text. Obviously a lot of this article will not apply if you are not doing the full job, but if you are going to drain the system it may be worth considering the history of your thermostat and pump while you are at it.
HTH
 
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