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Ahhh, I hear ya. I ran Rotella T6 in the Speed and it did use a bit more oil than others I had tried. If your testing shows excellent that I wouldn't worry about it. I know that I started using about a quart every 2500 miles on the Speed when I did some open track driving events. I would suspect that the extra sustained boost is pushing some oil around the seals here and there.
Very good to know about the JB4 and max boost. What map do you use for your street driving vs track time?
Also, what is the boost stock on our cars?
Thanks for keeping up with the thread and questions!
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