Well I'm due for another oil change right now and because Spring season is coming real fast and right now in my area we're averaging around 44-46 degrees Fahrenheit (7-9 degrees celsius), I was wondering if it would be smart to switch from 5w-30 synthetic (what I have right now) to 10w-30 synthetic? Going to be using the usual Mobil1 paired up with the 626 V6 oil filter. Any input would be great. thanks