Quote:
Originally Posted by RobMCoupe
I'm not sure about coolant leak is the caused. I noticed it went down a bit after replacing radiator. At this time, I am checking if it is fuel additives by switching fuel brand.
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Please keep us posted with your findings. I am using Chevron 90%+ of the fills...so maybe I should start filling up with different brands as well. But then again, it could also be our California fuel blends too.
Another trend that I've noticed is that most of the S54s that have high sodium readings are Z4Ms...just another datapoint.