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Not so much based on "hard facts" as much as internet discussions etc, as well as my limited knowledge of oil refining, ie. gasoline production, and more confidence in certain specific name brands, I only put Sunoco and Shell in the Supra ..hey, maybe I do that because they all start with "S"?...but in my DD ('07 RAV4 V6) I put any available unleaded regular.
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Nick '95 6sp Supra
Twin GT2860's w/TiAL exhaust housings, 2X TiAL WG's and BOV's, on V-band moded HKS twin manifolds,
AEM v2, FJO w/NTK, AEM meth/water spray, GSC S1 cams, OS Giken triple clutch and Super Lock LSD, Racelogic
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