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If it is not petroleum based, it is...what? water based? Alcohol based? Vegetable oil based? But if it is not petroleum or veggie-oil based, it is water soluable (this includes citrus cleaners).
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Non-petroleum oil doesn't mean water- or veggie- or alchohol-based. It means synthetically produced oil. Which can simply be chemcially-modified petroleum (most common), or a complete departure from petroleum hydrocarbons (like teflon-, silicone- and moly-based compounds, none of which are water soluble). Vegetable oil is definitely not a synthetic lubricant but is used as a natural lube, and is also not water soluble. Generally speaking synthetic lubricants have better tolerance for temperature extremes since the oils can be "designed" for any range of performance desired.