Went to Wally world today to check this out.
Most Tech 2000 oils say for example "S/K 5w-30" on the first line of the shelf label. This is understood since most tech 2000 oils are made by Safety Kleen Canada. Castrol, M1, Valvoline all follow this shelf label system.
However, the Synthetic Tech 2000 shelf labels do not start out with the Manufacturer ID like the non-synth tech 2000 labels do. This also applies to the synth vs. regular transmission fluids.
It stands to reason (based on this one clue only) that the manufacturer is different for the Tech 2000 full synth than the regular tech 2000. The full synth tech 2000 is the only oil on wally world shelfs that doesn't identify the Mfg. on the product code in the first line of the shelf label. Also, the Tech 2000 synth bottles have a serial number providing batch/date/time of bottling sprayed along the top of the label in dot-matrix (much like german castrol bottles have on the bottom).
Interestingly, the oil bottles are made by the same bottle manufacturer, (which is a way to identify the Esso/Exxon oil labelled as President's Choice at Loblaws/Superstore). To try to nail this shut, I'm going to take a field trip to a local petro-canada gas station and see if the Tech 2000 synth bottles are the same as the duron synthetic, and see if the dot-matrix printing on the side looks the same. If these clues align, you might just be right. Now if the bottles are from a totally different manufacturer, then I'm guessing it's not a Petro Canada product. Walmart would likely just deliver "Tech 2000 Synth" labels to Petro Canada for affixing to their existing stock of bottles at the bottling facility.
I'll report back shortly.