I install flooring for a living, just not that kind, (I install pre-finished hard woods and laminates (think pergo style but a higher end brand)...)
What we tell our customers is to avoid any thing that is oil based (like WD-40 and such) as it can leave behind an oil spot.
As for what we do recomend, well, that varies by brand and I'm not sure how any of it relates to a sheet floor of unknown brand and type. But here goes... My floors clean up well with a white rag with a small amount of alcohol OR mineral spirits OR acetone.
If you do know what brand the floor is, look it up on the web.