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  1. B

    SCARCE PENNZOIL ULTRA 5W30

    Why is Pennzoil Ultra 5w30 becoming scarce in some areas? With the exception of oil change outlets who want $95 plus.
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    which of three brands of oil for 2010 Enclave

    I am going to do the first oil change on my 2010 Enclave 3.6 with oil killing DI and 1000 miles. Of the following three oil brands 5w-30, which should I use? I plan on using a Mobil M-113 filter. Which one, Mobil 1 Extended Performance, Castrol Edge or Pennzoil Ultra?
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    Oil RecommendationFor 2010 Buick Enclave 3.6L

    What type and best brand oil is best for my new 2010 Buick Enclave? When should I do the first oil change? Owners manual recommends 5W-30 meeting API I live in Southeast Georgia on the coast. I do more highway driving than stop and go and usually above 70 MPH. It currently has 950 miles on it.
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