I’ve always used hyphens because if I later need to look at or parse the source, it may be difficult to tell what my intentions were. Moreso if for whatever reason I need to code something to handle my files—an unlikely case, but the small effort over time will be instantly realized.
I’ve been to SCS’s website and it seems… incomplete? It was on mobile so maybe that makes a difference but with how often I’ve seen it recommended I was surprised to see a site which did not look done. Did I miss something on their site?
Zippo fluid is pretty much VM&P naphtha. Get it at most hardware stores by the gallon.