Re: Synthetic Oil & Stuff

["Psychotic Don't-you-dare-tickle-me Elmo" <honge@creighton.edu>]

>>they analyze the oil when they change the filters, and if the level of
>>acids, metals, etc is low, they don't change the oil.  Many of the test
>>fleet trucks have 500K+ miles with no problems, with the original oil!

>The above is commonly done with large industrial engines, the bypass filter
>is big, and the main filter is the size of 55gallon drum. The only time the
>oil is changed (on some of the applications) is during an engine rebuild.

Hmm. I was gonna say that. I recall they have those because changing oil
by the xxx-mile/xxx-month rule wasn't practical cost nor time wise --
hence they got that "beer can" next to their engine bay on the semis.
Besides, changing that much oil is environmentally unsoundy.

The little filter can on passenger cars simply can't do that job. I
suppose you can dedicate your car's trunk space...

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