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The settings for "Fluid_Oil" with low "Density" and increased "Viscosity". "Surface tension" creates drops.
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Alternatives
If the result with → "Liquid - PBD" fluids it might happen that the simulation fluid does not meet your expectations , esp. with water and foam or oil in water. We therefore recommend using the you can also try to redo the simulation with → "Liquid - SPH" type for these kinds of simulations.The simulation will take longer, but with much better results.