[Shop-talk] suv tires and oil question

[Eric Russell]

More than just oxygen, the oil is also exposed to the byproducts of
combustion - CO, CO2, H2O and more. These byproducts can combine to form
acidic contaminants. Fresh oil has additives to combat this but they can't
do it forever.

EjR

On Mon, Aug 29, 2022 at 4:41 PM <eric at megageek.com> wrote:

> Gene asks...
> >Then why does oil sitting in a rarely used engine need to be changed?
>
> Gene, because in an engine the oil is exposed to oxygen and other airborne
> contaminates.
> In the (unopened) bottle, the oil isn't exposed to air.
>
> That is my understanding.
>
> Moose
>
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-- 
Eric Russell
Mebane, NC
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