Quote:
Originally Posted by MarcoZandrini
I highly recommend that the cooling system be drained, flushed with distilled water and refilled with a 50/50 mix of BMW and distilled water every 3 years. These cars, especially those with a turbo, are hard on the coolant. Btw, I’ve owned and wrenched on bimmers since 1974.
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never heard of mixing 50/50. Is that normal practice? Is it a Bad idea to just refill with 100% BMW coolant?