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Difference Between 0W-30 and 0W-40 Oil
What is the difference between 0W-30 and 0W-40 oils?
From a viscosity standpoint, a 0W-40 motor oil will have a higher viscosity at high temperatures than a 0W-30 oil, while having the same viscosity properties at low temperatures.
Switching Oil Viscosity due to Product Availability
Based on availability of particular viscosities of your product, is it all right to switch from one weight to another (i.e., 5W-20 then 0W-20)?
We specifically formulated Mobil 1 0W-20 Advanced Fuel Economy to provide the same high-temperature protection as Mobil 1 5W-20.  As always, please consult your owner's manual for the appropriate visc...
How is Oil Viscosity Measured?
How is oil viscosity measured?
Viscosity is now commonly reported in centistokes (cSt), measured at either 40°C or 100°C (ASTM Method D445 - Kinematic Viscosity). The centistokes rating is converted into the SAE weight designation ...
Oil for a Mazda Direct Injection Engine
Hello, I have a Mazda direct injection engine and I am trying to find one oil with low NOACK viscosity ratings. I am unable to find this information on the Mobil 1 5W-30 Product Data Sheet. Can you he...
Typical Mobil 1 5W-30, NOACK viscosity is 11-13%.
Can Synthetic Motor Oil be Used in a Subaru Turbo?
Specific to my 2005 Subaru Legacy Turbo - the dealer discourages use of synthetic oil stating that the variable valve timing, which is oil pressure actuated, is adversely affected. The recommended wei...
There is no issue using Mobil 1 5W-30 for this application. We would add that changing viscosity grades could impact performance of the hydraulics of the variable valve timing, but not simply changing...
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