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Old 02-27-2012, 12:41 PM
Glenn B's Avatar
Glenn B Glenn B is offline
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Join Date: Feb 2012
Location: Montross, VA
Age: 46
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Vehicle: 2012 Dodge Ram 1500 CC
Trim Level: Laramie
Color: True Blue Pearl
Engine: 2009-20?? 345ci (5.7L) Hemi V8 390hp 407lb/ft
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I believe you need to use the exact weight oil Dodge specifies on these engines.
I read that this was because of the MDS system possibly not working exactly right with lighter/ heavier oils.
IIRC, there is even a Chrysler TSB on the issue.
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