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Porsche 993 C2 oil

Discussion in 'Porsche' started by MD355, May 15, 2015.

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  1. MD355

    MD355 Formula Junior

    Mar 8, 2004
    802
    Athens, Greece
    Full Name:
    MD
    #1 MD355, May 15, 2015
    Afters some long discussions with some friends I was convinced to use thicker 15w-50 oil on my Porsche 993. My arguments for thinner oils were not good enough ! See below :

    Thin (5w-40) vs Thick (15w-50)

    Thick oil is better for summer time (high temperatures).
    Thick oil probably has lower oil consumption.
    Thick oil is less likely to create leaks.
    Thick oil warms up faster due to higher viscous friction.

    Thin oil lubricates the engine better.
    Thin oil puts less strain on oil pump / lower oil pressure and the engine produces more power ?
    Thin oil makes engine rev better ?
    Thin oil reduces engine wear in normal conditions ?
    Thin oil makes the engine louder ?



    For the weight 15w-50 I found in the stores nearby me the following :

    Shell Helix HX7 15W50 5L
    -Which says is suitable for engines over 100,000 Km
    https://www.autobarn.com.au/shell-he...0-5l-300010872


    Motul 300V 15W-50 2L
    -It is 2.5 times more expensive than the Shell brand. But is it Better?

    Motul 300V competition ?

    What would you use for 993 C2 ?
    Any thoughts ?
     
  2. ONEOFEW

    ONEOFEW Formula Junior

    Jan 19, 2006
    835
    LA
    Full Name:
    Steve
    #2 ONEOFEW, May 15, 2015
    Back in days when 993 was in production Porsche recommended and used 15-50 Mobil 1, to this day that's what I use .


    Sent from my iPhone using Tapatalk
     
  3. cheesey

    cheesey Formula 3

    Jun 23, 2011
    1,921
    #3 cheesey, May 16, 2015
    oil is made with a specific viscosity curve to the engine manufacture's requirements from cold start up to full hot operating temps... best to stay with the manufacturer's recommendations... the lubrication curve is not linear in response but complex... there is a lot more going on than simple viscosity change... there is a blogger on line that explains lubrication that goes by something like the "oil guy"... his blog does a good job of explaining what goes on and is an informative read based on science not myth from the shade tree mechanics. Get informed, to be able to make reasonable choices.
     

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