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Old 06-10-2019, 10:01 PM   #30 (permalink)
EcoModding Apprentice
Join Date: May 2019
Location: California
Posts: 121

Hyhoe - '08 Chevy Tahoe HY2
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Switching over from chevron 91 octane to Shell V-Power 91 octane

They claim to have a new formulation
we will see if it "helps or hurts MPG"
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