If knowing weather you've got oil or water is stopping you from sleeping there's a simple test used in emulsion science that might work called "the drop test":
Get yourself two separate glasses, one containing a bit of water, the other some engine oil that's clean enough to see through. Put a few drops of the mystery solution into each and give them a little shake/stir. The drops should mix into the same type of liquid and that'll be your answer.
Get yourself two separate glasses, one containing a bit of water, the other some engine oil that's clean enough to see through. Put a few drops of the mystery solution into each and give them a little shake/stir. The drops should mix into the same type of liquid and that'll be your answer.
thou shalt not kick