Originally Posted By: rikstaker
Hey Klook,
thanks for all your inputs.Your are right about the temperatures.Just youtubing cold weather synethic oil, shows how even a synthetic oil "flows" at -40. It slowly drops from the bottle like hooney, but its still better than dino(they made a point), which took about 10 secs to flow.
I took care of a few things today.I went to Hyundai dealership and asked if 0w-20 would void my warranty, they said NO,(provided I follow recommended OCI). So thats good news.
Secondly, I ordered the double element oilpan heater from proheat(they owe you a comission

)
I am probably gonna switch to Mobil 1 0w-20 afe soon. I now have the opportunity to use Redline fuel system cleaner to clean out the injectors before the oil change.
will keep you posted and maybe do a uoa after the winter.
Niiice! Yes, be sure to post back about how everything goes for you. Interesting that someone at your dealership gave you the go-ahead on the 0W20. Even if they know logically it can only help, these people still almost always speak the company line. And yeah, get it in your car right away, even if draining out the current stuff is premature. I hate to waste but it's good to feel fully protected.
I don't envy your temps but I do envy your OEM engine block heater for your Sonata. Galls my stones that on USA models not only can't the heater be officially obtained but it can't even be fitted. Jerks. I'm a huge fan of engine heaters and have had the devices for two previous cars.
I'd love to get that double-element Proheat stick-on device on my car. Wish it was available last year when I was shopping. I wonder how I'd even get the current one off the oil pan in order to install the double one...once that glue dries it feels like the heating pad is attached with concrete! I'm sure a quick email to the company would provide an answer.
Good luck and stay warm!