I may speak for nothing since this topic is dead but I read a lot of nonsense about inks.
Many talk about adding fish oil (why not tarama) or brake fluid (it's just bad on the paint of cars, it starts to blister) (decades of idiots who mix fish oil and brake fluid, it gets tiring).
To make a short explanation:
Alcohol-based inks mix with each other.
oil-based paints mix with each other.
the two are different therefore each boxing in its category.
Don't start mixing alcohol-based ink with oil paint and fish oil with brake fluid because even the creator in all his goodness and selflessness can only deny you.
It's like that.
Know that what makes the strong point of inks or paints are pigments and dyes. The more there is, the more it is opaque or leaves traces.
It's as simple as that.