Originally Posted By: DGXR
There are many categories of additives. Unfortunately this thread did not start well because the OP didn't specify. But by what I gather from the start, specifically the reference to UCL, the OP is likely talking about fuel additives.
Many gas additives contain mineral oil, but not all fuel additives are an ineffective waste of money. Too many positive accounts from users of Sta-bil, Techron, PEA-based cleaners, and others. Many fuel additives do work, but TOO MANY people are expecting additives to magically rebuild the engine or instantly fix that (insert symptom here). There is no substitute for proper, regular maintenance.
So I think a reputable fuel additive/cleaner used 2-3 times per year would help many cars that are not driven regularly or allowed to reach full temperature for over 30 minutes at a time. The need for these additives (and their effectiveness on any given engine) largely depends how the vehicle is driven.
Also, that list is absurd. TL

R
I would just add that light mineral oils in many products are there for specific purposes such as to; 1) to keep the ingredients in solution (mixed), 2) to keep the active component from evaporating (any product containing volatile's such as alcohol), 3) to lower or to increase viscosity, etc.
To add some reality to the thread:
I don't ever see any Oil Blender or formulator posting a public declaration of his entire formulation for various reasons such as IP, etc.
And lastly, unless you are a chemist with an advanced degree, what would you do with the information even if it were published?
Unless you have the training and knowledge to interpret the chemistry and how each individual component in the additive package affects each machine component in a mechanical system, you could be making some dangerous assumptions.
If you want to know what general chemistry is in engine oils, gear lubricants and hydraulic oils, see this Post:
Multi-Functional Additives
There is a lot of Information in this Section and well worth consulting:
Science and Technology of Oils and Lubricant Additives .