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Old Aug 16, 2006 | 04:07 PM
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lochmoy
Joined: Mar 2006
Posts: 35
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From: CA
Default Re: never heard this before...

"W" means winter. In winter weather the 0W oil will flow like a 0W oil, and the 5W will flow like a 5W oil and a 10W will flow like a 10W oil just until the engine warms up.


http://www.synthetic-oil-tech.com/d....weight_oil.htm
 
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