Does anybody here use 0-20w? Or only 5-20w? I know cold weather folks like 0-20w better but does it improve mpg (btw mobil says their 0-20w meets 5-20w standards) what other advantages are there for thinner oil?

 

You should be fine if this car is your DD car and u dont push it alot.

Usually people who are "rev happy" and pushes their car to high rpm then I would recommend thicker oil.

 

I used it before my recent oil change. I just used the 5W-20 super syn as its $22 for 5 quarts vs about $32 for 5 quarts of the 0W-20.