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  1. Hyundai Sonata DIY Section
    I took my 2009 Sonata v6 (155,000 miles) to Autozone to use their code reader. I've been running 85 octane all Summer. For the P1033 O2 "slow response" an old timer at the 'Zone suggested I top up w/premium. The interstate near me has a max speed limit of 80mph... a gallon later and the...
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