Question about 2003 BMW Z4
You can substitute with another coolant, but the manufactors one is recommended for many reasons. Best of all because it has been tested for the heatin BMW engines. Mix it 50/50 with water and I'd reccommend using the bmw coolant to stop overheating and causeing serious damage i.e. gead gasket.
Posted on Aug 07, 2010
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Posted on Jan 02, 2017
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