Oil that does mix with water

Factual Questions
1

What’s the SD on soluble oils that will emulsify in water? I started using a lubricant called Ballistol that mixes with water and doesn’t seperate even after a few weeks in solution. Instead of displacing water like WD40 is mixes with it and still protects metal from corrosion. It’s made in Germany by a company called Klever and was apparently invented in 1904 for military use.

My question for chemist types is, what defines an “oil?” My Websters says oils are soluble in ether but not water. What the heck is this snake oil? (not to be confused with Snake Oil™ brand lubricants.)

2

I don’t know anything about Ballistol. But I once heard Lanolin is one of the few water-soluble oils available.

3

Emulsifiers allow oils to mix with water.

Main Entry: emul·si·fy
Pronunciation: -"fI
Function: transitive verb
Inflected Form(s): -fied; -fy·ing
Date: 1859
: to disperse (as an oil) in an emulsion; also : to convert (two or more immiscible liquids) into an emulsion

  • emul·si·fi·able /i-'m&l-s&-"fI-&-b&l/ adjective
  • emul·si·fi·ca·tion /i-"m&l-s&-f&-'kA-sh&n/ noun
4

Machine tool cooling oils emulsify to such an extent that they don’t fully separate.
Olive Oil absorbs water, so does brake fluid.