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    High Fuel% 2013 Mazda CX-5 2.0 Skyactiv 40579mi

    I'm seeing high fuel percentage in my UOA from Blackstone. This car resides garaged in San Diego and is primarily a highway commuter or long roadtrip car; not exactly severe usage. I'm concerned about potential buildup on the valves since this engine is DI. I know Blackstone's flashpoint...
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