Hi,
According to the Mobil 1 site:
10W-30 Above 0° F You can use Mobil 1® with SuperSynT 10W-30 with confidence. This viscosity is also available in Mobil Drive Clean OilT and Mobil Drive Clean PlusT High Mileage formula.5W-30 All temps You can use Mobil 1® with SuperSynT 5W-30 with confidence. This viscosity is also available in Mobil Drive Clean OilT and Mobil Drive Clean PlusT - both the Newer Vehicle and High Mileage formulas.
I am rather confused by this rating since the pour points of both oils are identical. I want to run the 10W30 so that the extra oil film would quiet the piston slap I have on my 2001 Buick Century on cold startup.
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