Re: It's not oil over yet...is it?

["Duner Tor" <tors@xxxxxxx>]

> Actually, I believe that the SJ rated oils have had the zinc and phosphorous
> levels lowered compared to SH rated oils to extend the life of automotive
> catalytic converters.  Zinc and phosphorous are anti-wear agents and if you
> lose your oil film it is this zinc and phosphorous that are the last line
> against direct metal to metal contact.  As far as the slippery stuff goes,
> this is in any oil that is rated as "energy conserving" regardless of the
> API rating (SJ,SH,SG...).  I am not sure but it may be a 'mandatory'
> requirement for 5w30, 10w30 and 10w40 automotive oils.  The slippery stuff,
> that is.
>
> Do we have any Triboligists on the list?  How about some comments?
>
> Personally, I changed my oil in the fall to the same brand as Martin is
> using.
>
> Garry
===========================
Here's some good info on oil:

http://www.ibmwr.org/otech/oilreport.html

Duner Tor
Bozeman MT

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