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    Oil recommendation for Pontiac Gran Prix

    I am new to the board, so I apologize if this topic has been covered. I couldn't find anything via the forum search, so here goes. I purchased a 2008 Pontiac Gran Prix with 3.8L Series 3 motor in October of 2013. It had 57k on it when I bought it. Since then I have put about 6k on the car. At...
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