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					Originally Posted by  Timco
					 
				 
				What makes mobile 5w50 better than 0w40? Good to know. 
			
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Slightly more zinc (about a 100 ppm at the end of the drain interval).
Slightly more phosphorus (about a 100 ppm at the end of the drain interval).
Much better SUS Viscosity at 210 degrees (less shearing of the oil).