I just hit 270,000 miles.
The second tank of Conoco 85 looks promising. My trip meter is at 275. The gauge is just below half way. I estimate two more "gauge drops".
Thus this looks like improved MPGs.
Next fill should I switch to higher octane?
Yes, I will put in a bottle of Techron.
Considering the overflows probable over it's lifetime, should I replace the charcoal filter?
Another 80 mile road trip and I Have to see the MPGs!
Should I test the 91 octane when I refuel?
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