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Old 10-11-2012, 10:03 AM   #13
CRAZYHAWK
Scooby Specialist
 
Member#: 198067
Join Date: Dec 2008
Chapter/Region: Tri-State
Location: RAMSEY, NJ
Vehicle:
2009 IMPREZA 2.5i 4d
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M1 has high mileage 5W-30, 10W-30 and 10W-40.


Quote:
Originally Posted by bluesubie View Post
If you aren't having leaks then you may not need to switch. The Mobil1 HM oils have additional seal conditioners, have a thicker viscosity within the same grade, have a higher High Temp High Shear, and have more anti-wear additives when compared to the regular oils. There is an M1 5W-30 High Mileage oil. Some people run them just because they're more robust.

-Dennis
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