
 Originally Posted by 
gn7
					
				 
				The 0/40 M1 is an excellent oil. People see the zero and get all jittery. I hardly pay any attention to the W number. If you don't live where it gets below freezing, its a useless number. 
Interesting fact about the 0/40, its the oil Mobil recommends for non racing performance use in place of their racing oil. The other being the 15/50 if you need a heavier oil. 
I only mention the 10/40 High Mileage for people that bring themselves to use a 0W oil.
			
		 
	
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