Reply to "Engine Oil Testing Results"

jfb05177Member

I seem to recall overhearing that the TBN mentioned was the Total Base Number addatives to the oil to allow it to nutralize the acidic blowby contamination. the oil changing pH as it is used is a major reason for the change interval. the trace amount of moisture in the oil alone with the lower TBNs will lead to corrision and wear.
So for some reason the racing oil does not have the additives for multiple starts (heatup and cooldown cycles)

3/13/153:31 PM

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