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  1. K

    5w30 or 5w20

    I have a 2006 Nissan Frontier, 4.0 V6. I am running Mobil 1, 5w30 as the manual calls for. What would be my anvantages or disadvantages of running 5w20, or 0w20?
  2. K

    Mobil1 vs Mobil 1 extended performance

    I have used Mobil 1 for years now, & was wondering if the Mobil 1 ext. performance is worth the extra money. Is there a difference between these oils? Has anybody done any comparative oil analysis on these oils after use?
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