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Thread: Engine Oil BEST suited for a 535i

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  1. #1
    Join Date
    Apr 2006
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    Chicago, Il. U.S.A.
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    You're already doing the right thing. 36c, where are you?
    EDIT genphreak is right on. 10w-40, which I always used in my M30s, is recommended only up to 10c. 20w-50 or even staight 40 is what is recommended in the owners book for '89 M30s. The lighter oil never harmed mine but your temps are typically higher.
    Last edited by Ross; 07-18-2007 at 08:47 AM. Reason: I'm wrong
    "The gas pedal wouldn't go to the floor if it weren't meant to be there"

  2. #2
    Join Date
    Dec 2005
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    Philippines...

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