Larry;
I've never used The Epoxy Plus brand floor covering but I did have an epoxy primer rollered on to the concrete floor of my workshop and then had it top coated with a two-part Sherwin-Williams polyurethane. This is available only from the S-W industrial distributors, not the usual S-W retail outlets. It has held up very well and the light color makes it brighter in the shop. Polyurethane is resistant to gas & oil and if you clean up spilled brake fluid promptly, it won't hurt it, either.
Regards, Neil Tucson, AZ