spud786 Posted March 16, 2015 Share Posted March 16, 2015 I had read that the M1 Extended Performance was still using all PAO... It has added calcium for longer term cleaning and that's your extended performance. BLS posted a uoa with a mere few hundred miles, with metal counts that are high for a vfr in that short amount of mileage. I guess if all you guys are running sub 1000 miel intervals, you wont see how much metal you are actually losing. Link to comment Share on other sites More sharing options...
Member Contributer BusyLittleShop Posted March 16, 2015 Member Contributer Share Posted March 16, 2015 So what does that mean Larry? Mobil marketing speaks to our emotions like ESP Emissions Systems Protection whereas the API ratings speak to our intellect... ESP is not an API rating... API rating are SN SM SL means the phosphorus and zinc levels have to be emission friendly... Link to comment Share on other sites More sharing options...
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