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Thread: Correct Oil grade for 68 911S

  1. #1
    Member
    Join Date
    Mar 2012
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    Mishawaka, Indiana
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    98

    Correct Oil grade for 68 911S

    I don't have a manual for my 68' 911S and I'm looking for the correct oil grade to use. Anyone out there know what grade oil that Porsche recommends for this car.

    Thanks
    Larry

  2. #2
    Senior Member jim amato's Avatar
    Join Date
    Feb 2011
    Location
    n.e. ohio
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    442
    the service manual reflects old technology, while i do not know the current factory recomendations most guys i know are using a multigrade 20-50 or 15-40,outside temperture is a factor, my $.02
    registry #2072

  3. #3
    Senior Member
    Join Date
    Jun 2009
    Location
    Cape Vincent, NY
    Posts
    116
    +1 on old technology. Service manual says HD oil 30W Summer, 20W Winter. With multigrades available today use 20/50 Summer, 15/40 winter.
    1968 911S 30K miles
    2006 Saturn Ion DD
    1988 Beretta GT
    1981 5-Ton Chevy stake-bed

    Air goes in and out, blood goes round and round, any variation of this is a bad thing.

  4. #4
    Depends on where you live and when you drive (ambient temperature range)...
    Peter Kane

    '72 911S Targa
    Message Board Co-Moderator - Early 911S Registry #100

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