I have been using TC-W3 for the past 5 months. My Infinity G35 runs much smoother. The combination of the TC-W3, some driving changes and increasing tire pressure to the max recommended have improved MPG by 19.52%. I made all these changes at the same time, so I cannot attribute anything other than the smoothness to the TC-W3. Oh, my last smog test passed with flying colors, with the TC-W3 in the tank.
And I am using the Walmart brand, FYI.
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