Re: RE: ...Mileage...and oil

From: Barry Oliver (barrysuperhawk@insightbb.com)
Date: Sun Feb 17 2008 - 16:40:26 EST


jon@dakota-truck.net wrote:
<snip>
> Also, regarding oil life in general, I have read that oil itself is
> never actually "used up". (Except for oil that fails and is converted
> to something else like coke or ash of course.) Rather, it is the
> additive pack which is used up, and whether speaking of conventional
> or synthetic oil, it is actually the state of the additives and the
> build-up of collected "crap" which determine when it should be
> changed, and not the condition of the base oil itself, which will not
> change.
>
>

Allow me to be clear, in my oil-test ramblings, that is precisely what I
am referring to. Specifically, I am referring to Blackstone's TBN test.

> Do you want a TBN? This is a test used to measure the amount of active additive left in the oil. It may be useful if you are interested in extending your oil usage. The test costs an extra $10.

http://www.blackstone-labs.com/do_i_need_a_tbn_.html



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