Yes we do. Don't you????? If not, I can't imagine what you do with it.Honestly, seems like extra overhead for minimal gain, as I imagine most people are going to be honest. I'm just thinking to the service center where I get plates renewed and I imagine it could get busy (not much staff). Plus most people do it on-line so they are staffed accordingly.
Sure, I mean we do that with motor oil right?
If you get car serviced by dealer or garage it gets done anyway and the facilities that re-refine used oil do have to meet environmental laws.
I change the oil on my 3 older cars myself. Total of about 24 Litres a year. Canadian Tire take it even if we didn't buy it there. It gets added to their used oil and goes to a recycler.