So the latest API certification is sort of a step back in oil function
for our applications.
I can see where they would try to keep the EPA at bay.
Looks as if the synthetics are not THE answer to all our problems.
Thanks all for the input,
Bill
On Mon, 9 Apr 2007 17:15:24 -0400 (EDT) "Robert M. Lang"
<lang@isis.mit.edu> writes:
> On Mon, 9 Apr 2007, William G Rosenbach wrote:
>
> > This is why I'm still confused. Is the synthetic oil capable of
> > withstanding the load by itself or must it have the Zn & P.
> Hearing from
> > lots of folks raving about NO wear found on tare down after
> extended run
> > time.
>
> I can't comment on this one. No direct experience.
>
> > Have all ZN & P containing oils been made unlawful for street
> > applications?
>
> okay - an important distinction is required here. The reduction of
> ZPPD in
> the oils is not mandated by law. It is reduced in oils rated by the
> American Petroleum Institute, aka API and the current spec with
> reduced
> ZDDP is API SM.
>
> Now, whether API proposed the standard to keep EPA from mandating
> the
> reduced levels is a subject for another conversation. I personally
> have no
> idea if this the case or not.
>
> So, if you want oil with ZDDP, look for oils graded API SG. Higher
> than SG
> (for example SM) API rating means reduced ZDDP. In the ones right
> after SG
> the reduction is smaller in some brands than others.
>
> Motorcycle oil and certain racing oils still have the ZDDP. The
> terms that
> are used like "illegal for street use" are marketing hyperbole.
>
> > On vehicles with OR without a catalyst?
>
> It's important to understand that in the US, all cars have had cats
> since
> the mid-70's (please don't flame me about early 80's Hondas having
> no
> cats). The point is that the vast majority of on-the-road cars in
> the US
> have cats or were equipped with them from the factory. Any of these
> catalyst equipped vehicles will have been effected by the presence
> of the
> ZDDP (and other stuff). The move to sell over the counter products
> to
> consumers is not aimed at us - that is racers and old car buffs -
> and if
> nothing else changes the availability of the earlier API rated
> products
> and products labelled "for off-road-use-only" should not change in
> the
> near-term. The new API rated oils are meant for Joe Consumer and
> his
> cat-equipped grocery getter.
>
> > Bill
>
> regards,
> rml
>
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