WHAT WEIGHT OIL FOR 350 ENG.

Discussion in 'Camaro Questions' started by BILLYZEE, Jul 3, 2005.

  1. rchydzik

    rchydzik Veteran Member Lifetime Gold Member

    747
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    Nov 13, 1999
    Colbert, WA USA
    I may be totally old school, but here is a thought. Newer cars all have overdrive transmissions and are turning fairly low rpms (2000 or so) on the highway. An older car will be in the 3000 rpm range or so. I would think that oil is hotter in a higher revving V8, so a heavier weight is appropriate in warm weather. This is just an opinion, but manufacturers did not recommend 30 weights above 86F in the past.

    All that being said, I don't think you would have any problems with any quality 10W30. I use a 15W40 in the summer, expecting to see ambient temperatures in the 90-100F range.
     
  2. COPO

    COPO Veteran Member Lifetime Gold Member

    16,248
    239
    Sep 15, 1999
    Ontario, Canada
  3. BrianBerry

    BrianBerry Veteran Member

    160
    0
    Apr 13, 2005
    Straight 30wt oil. Excellent all around 40 degree F and above oil.

    Thick enough to satisfy the 20w-50 folks and gentle enough for those cold mornings that the 10w-40 people think about.

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    Pic of My Camaro Z28
     

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