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Old 04-16-2009, 10:57 PM
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Marcelo Marcelo is offline
Dodge Ram Forum Senior Member
Join Date: Dec 2008
Location: South America
Posts: 196
Gender: Male
Vehicle: 2005 5.7L HEMI
Trim Level: SLT Quad Cab 4WD
Color: Flame red
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Originally Posted by Zonestar View Post
.... If you have the 5.7 HEMI use 5W20 motor oil.
I wonder if oil viscosity should be the same in hot weather ... Owners manual doesn't tell a word about it. My RAM always used Castrol Syntec Blend 5W20, but I don't really know if these everlasting summer I live and drive in should make me go up in viscosity
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