Originally Posted by john_pifer
Originally Posted by geeman789
In Arizona, why are you considering any 0W oil ... ? 0W oils are designed to work well in extreme COLD temperatures, like -20F and colder. Pretty sure you don't see temps like that, EVER.
Your climate was made for an old school 10w30. Adequate cold weather pump ability, with less risk of shearing down a grade.
It's easy to think of Arizona as a very hot place, and much of it is. But, don't forget, Arizona also has elevations of over 12,000'. So, a 0W-30 is actually great for the varied temps there, without many downsides.
Not only that, but there are 0W-30's that actually hold up better than 5W or 10W-30s due to the use of higher quality base oils that are necessitated in their formulation (ie: higher viscosity index).