limitations of VOA?

Joined
Jun 4, 2005
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2,230
Location
Southern Ontario
Could it not be the case that there may be additions to a base oil which is not tested for by labs? So for example two different PCMOs could appear identical in a VOA but one may differ greatly than the other due to the inclusion of elements or compounds not test for? As well a VOA cannot determine the quality of the base oils used in the formulation? So again for example couldn't a synthetic oil and a mineral/nonsynthetic oil have identical add packs as seen in a VOA with the base stock being the difference? (or would the analyzed viscosity and flashpoint give it away?)
 
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