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Just wondering if anyone has done this: vinegar + distilled water. Run it for 30 min bc vinegar cleans up mineral deposit well.
Then drain, refill with distilled water. Repeat a few cycles then add distilled water + coolant for the final fill?
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1998 E39 528i 5sp MT
2006 E53 X5 3.0 6sp MT
Last edited by cn90; 10-31-2025 at 10:46 AM.
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