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Thread: oil grade for M60

  1. #1

    Default oil grade for M60

    What grade oil should i run in the winter i live in Phoenix AZ, the temp is around 50 to 60 degrees during the day and 38 to 45 at night, i run mobil 1 15w 50 in the summer and the car has 130k

  2. #2
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
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    14,667

    Default

    mobil1 0w-40 all year, sunny or dark, here or on the moon...well if you get that on the moon call me.
    95 E34 530I V2.17
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  3. #3

    Default

    ive been reading a lot of oil questions in different places. it seems that 10w-30 is best except in 'arctic' climates.

    in these cars 0w-30 would be good choice.

    it seems for my 530 that the o-40 seems 'smoother' in some way, but probably my imagination.

  4. #4
    Join Date
    Dec 2003
    Location
    Eastern Tennessee USi
    Posts
    14,667

    Default M1 5w30 used to be the whip til they came out with 0w40

    which covers a broader spectrum.
    95 E34 530I V2.17
    ===========
    Those who make peaceful revolution impossible will make violent revolution inevitable.

    John F. Kennedy

  5. #5
    Join Date
    Jan 2004
    Posts
    4,148

    Default I'm in Tucson and i run 0w40 mobil one synthetic year round now, alot of

    People still seem to be under the old assumption that you have to run a higher weight oil here due to the ambient temperatures. With modern day synthetics thats no longer true. The numbers on the mobil one synthetic simply mean that at 32F it pours like a 0 weight , so it doesn't thicken up like molasses when its cold. Cold thick oil takes longer for the oil pump to suck it up and get to the bearings to lubricate them when you first start it up, so on cold startup up with a thicker oil you're far more likely to cause harm to the engine bearings and more rapid wear from oil starvation. The second number 40 indicates that the oil doesn't get any thinner than a 40 weight straight weight oil when heated to 212F which is a little higher than normal operating temperature for engine oil. So that tells you that it pours as easily as a 0 weight when cold so the engine gets oil quickly but stays as thick as a 40 weight when hot for protection at operating temps. Also the regular dino oils when heated above this 212F point start to drop off in thickness quickly their flashpoint is much lower whereas the synthetic maintains its thickness and has a much higher flashpoint , so in hard driving on a hot day in phoenix you have better engine protection and less wear.






    QUOTE=ejhiggins]What grade oil should i run in the winter i live in Phoenix AZ, the temp is around 50 to 60 degrees during the day and 38 to 45 at night, i run mobil 1 15w 50 in the summer and the car has 130k[/QUOTE]

  6. #6

    Default

    thanks a lot guys for the info

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