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  1. H

    5w 30 vs 5w 40

    Well I guess the majority says I should stick with factory weights which is what I expected to hear. As for the 5L V8 it is rather sophisticated being direct injection and developing 420hp so not exactly a party pooper. Being in Canada I do mostly all my oil changes as the dealers here are...
  2. H

    5w 30 vs 5w 40

    I am a firm believer in Shell Rotella oils. That being said my wife's Turbo requires full synthetic 5w 40. The recommended oil in mine is 5w 30 (2015 Genesis V8 5.0) however I do have a good stock of the 5w 40 full syn. I see no problem using this in my ride however I ask the question to the...
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