Trevor Boicey wrote:
> There was a very long and detailed scientific study posted on
>the web, which unfortunately is gone. However, many listers will
>remember it, it was bantered about.
>
> It was a study done on industrial equipment, machines that are
>worth six figures and have their oil lab analysed every month
>to keep them in top shape.
>
> The goal was to increase fuel economy by switching to K&Ns.
>
> I hope somebody can repost the study, but the net result was
>that after the first series of lab results were in, the silicates
>(sand) level in the engine was deemed too high to even continue
>the test for the most expensive machines, and the full test was
>only done for the older expendable ones.
>
> In other words, after one month of an approximately six month
>planned test, they feared destruction of their 6-figure valued
>machines and stopped the test.
Mmmm, I must have slept through that thread. What sort of environment
were these "industrial" machines in? Certainly, if they were earth
movers, no lightweigh airfilter as commonly used in cars will provide
adequate protection. Any Australian who lives in the Outback
knows that the stock filters will precipitate certain engine failure
within 10,000 kms. Aussie cars are sold with optional "outback"
packages which include "industrial strength" (whatever that means)
air cleaners.
K&N know that a class-action suite against them would kill the
company, so I am pretty sure that in a "normal" automotive
environment, ie in the 'burbs and on the freeways, K&N and stock
cleaners do just fine.
Shane "velocity stack" Ingate in San Diego
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