Mobil 1 oil weight

Taka Mizutani t44tqtro at
Mon Apr 30 07:51:07 EDT 2007

That's the part I disagree with- with the light weight oils in the I-5, I
get LOUD lifter clatter on cold starts and oil consumption.

I don't get that with the heavier oils.

I also don't agree that 0W oils are fine- the anti-shear properties of the
super-lightweight oils they spec these days is not so good. I would be very
leery of running stuff that light in a really high performance engine. I
know that Corvettes and Porsches as well as AMG Mercedes run these 0W oils,
but I doubt anyone is using the stuff in a track car. Considering that at
least the LS7 as the GT3 motors are really, really high-strung, I wouldn't
trust that light stuff to keep the bearings lubed.


On 4/30/07, Grant Lenahan <glenahan at> wrote:
> Dont confuse burning oil with lubrication.
> You also didnt reference what kendall, base stock type, flash point, VI
> rate nor ACEA acceditations.
> So there's not much to go on in your post.
> Read the articles I referenced first.
> I dont believe the tolerances are THAT bad on a well maintained I5. I
> cant speak for yours in particular of course.
> I dont care what you personally use, but I do want to overcome the
> persistent myth that 5W30, 5W40, 0W-30 and )w40 are too light. They are
> not.
> Grant

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