Helps increase engine efficiency and improve fuel economy, based on 0.2-2.3 percent potential fuel economy improvement obtained by switching from higher viscosity oils to a 0W-20 or 0W-30 grade. Actual savings are dependent upon vehicle/engine type, outside temperature, driving conditions and your current motor oil viscosity.
Quote:
*Savings would be based on 0.2-2.3 percent potential fuel economy improvement obtained by switching from higher viscosity oils to a 0W-20 or 0W-30 grade. Actual savings are dependent upon vehicle/engine type, outside temperature, driving conditions and your current engine oil viscosity.
I found this information in more than one place but this is the first one I found this morning browse down the page until you hit the blue Semi Synthetic in light blue.
http://www.patriotsubaru.com/synthetic-oil.htm
That's a dealer site not Subaru.
It also doesn't say that 5w30 offers three times the protection than 0-20. It says that semi-synthetic gives three times the wear protection than mineral based.