Well it's been a fun, cheaply lubricated summer running 10w & 15w40, but inevitably here in the great white north, it will eventually be freezing cold again and I will have to go back to 5w (or 0w) oils. I'm sure this whole discussion is splitting hairs and my engine won't notice the difference but if you will entertain me a moment and offer up your opinions, what oil offers the greatest protection under extreme driving conditions, a 5w40 HDEO (with a gas engine rating) or a 5w40 Euro oil? Both cost about the same.
Car is a 2016 Hyundai Accent 1.6l GDI and will probably be at 170k+ by the time winter comes around. Driving conditions are a 50/50 mix of highway and city, non stop running for 8-12 hours at a time, severe traffic jams, slow driving in snow with some tire spinning to get unstuck for good measure, and stop and go with lots of idling. Oil will never be run more than 5k before dumping (typically once a month).
Car is a 2016 Hyundai Accent 1.6l GDI and will probably be at 170k+ by the time winter comes around. Driving conditions are a 50/50 mix of highway and city, non stop running for 8-12 hours at a time, severe traffic jams, slow driving in snow with some tire spinning to get unstuck for good measure, and stop and go with lots of idling. Oil will never be run more than 5k before dumping (typically once a month).