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Old 04-20-2009, 05:54 PM   #10
SilverGlow
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Drives: 2007 Yaris Hatchback
Join Date: Oct 2008
Location: Southern California
Posts: 189
Quote:
Originally Posted by blacksan View Post
I personally would stick with the 5W-20. The temperatures in your area warm enough that they would not warrant 0W-20 in my opinion and might not protect as well as 5W-20 under heavy loads and higher engine temperatures.
You have the same confusion (misunderstanding) that many have in regards to 0w-20 and 5w20.

The fact is, the ONLY difference is that the 0w protects better during very cold weather during start ups. As to operational oil temperatures (180f to 212f and above) the 5w and 0w both protect the same because they are both 20 weight on the high end of the viscosity range.

So at hot operational temperatures, 0w-20 and 5w-20 provide the same protection.
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