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					Originally Posted by Brucelee
					
				 M1 0W-40 is fine for the car.
 So is any QUALITY SYN with a 5W-40 rating.
 
 Not to worry.
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I just searched for M1 0W-40 at my local store.  No luck!   
Will there be any measurable impact on cold weather starts / cold weather lubrication performance (and I mean COLD - 10 degrees F or less) between 0W-40 and 5W-40?