When I rode bikes I ran 20w50 in them. I figured air cooled engine and ambient temps sometimes in the 105* range it just added a little more protection. The Harley I had back in the '80's recommended the use of straight 60 weight and that's what I used.Well, I went looking at different countrie's forums/websites.
Apparently in Dubai, and other Middle Eastern locations, people are using 20W60 on their personal cars. I just couldn't find if the Versa is sold there or if this engine is used.
Their reason for this is the summer heat.