Thread: What Oil in a cosworth
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Old Sep 2, 2005 | 11:47 AM
  #22  
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snow*
Too many posts.. I need a life!!
 
Joined: Mar 2005
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From: New Zealand
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Originally Posted by oilman
10w has better cold start than 15w which means the oil flows better when you turn the key and this means lower wear.

They are identical at 100degC

Cheers
Simon
So why would anyone use 15w-50 over 10w-50 mate?
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