Isn't Shellite a generic term for a mix of hydrocarbons over a range of fractions that comes off the still ?

I have two brands in front of me right now from different manufacturers.

One is from Sceneys (Home hardware) and the other is from KCB chemicals (Supercheap auto).

The sceneys brand pulled a lot of crap and didn't seem to facilitate precipitation effectively and I haven't tried the KCB yet.