Recently in Wally Mart, I saw gallons of outboard lube mix titled "Evinrude Johnson Synthetic Blend". It was thinner blue color than I have seen of XD 50. No where on the label did it state "XD 50, XD 100, or XD 30." I question if this is the original XD 50? Or might it be a cheaper version for marketing thru a discount box store? Price was around 27-28$ per gallon.