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  1. Chevy SS General Discussion Forum
    I have a 2014 Chevy SS, it has 40k miles and long story short I accidentally added one and a half gallons of 110 octane LEADED gas to my car. After realizing it was LEADED gas I filled the rest of the tank (18 gallon tank) with 93 octane premium unleaded gas, are my catalytic converters and 02...
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