View Single Post
      01-15-2019, 04:55 PM   #74
RobMCoupe
Captain
RobMCoupe's Avatar
60
Rep
932
Posts

Drives: 2007 Z4 M Coupe
Join Date: Feb 2010
Location: Bay Area

iTrader: (6)

Quote:
Originally Posted by XMetal View Post
Quote:
Originally Posted by RobMCoupe View Post
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.
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.
I'll do an oil change this and send it out for analysis and report back.
Appreciate 0