Have you noticed any increases fuel consumption, higher emissions of soot, unburned fuel, engine noise and/or rough operation? Do you have problems starting your engine? Is it knocking? Or, hard start, engine stalling or refusing to start, odd behaviour, eventually making it to stop abruptly as though you’re running out of gas when climbing through steep slopes, acceleration problems, fume odor, motor sputtering, drowning when running idle, etc.?

In the past, used oils used to be disposed in sewers, on the ground or in municipal landfills and dumps. Fortunately, that is now longer permitted. Since May 1992, used oils are regulated by the Basel Convention on hazardous waste of which Canada, the United States and OECD countries are signatories.

It is not unusual to receive at the lab an oil sample with the wrong type of oil on the label, i.e. whose specs do not correspond to the specs of the reference oil. This usually is an indication that different types of lubricants have been mixed together.