David,
If you can to receive the MSDS it is good. Usually second section of MSDS that named “Information on Ingredients” contains information on components for example such as:
· Base oil, paraffinic > 80.0 %
· Additives < 20.0 %, including Zinc Alkyl Dithiophosphate < 2.00 %
Hope it can help to you.
Mikhail