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Old 07-27-2009 | 03:52 PM
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Default Oil for Duramax

What do you use for oil in a Duramax? Last time I used a truck synthetic, Rotella, I think. Is Mobil 1 15-50 good for these?
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Old 07-27-2009 | 04:21 PM
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Shell Rotella 15/40, change every 7500 miles.
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Old 07-27-2009 | 04:22 PM
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Amsoil Synthetic 5W-40 Diesel Oil or 15W-40 Diesel Oil

http://www.amsoil.com/redirect.cgi?z...551&page=store
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Old 07-27-2009 | 05:08 PM
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Originally Posted by poiuy10
Shell Rotella 15/40, change every 7500 miles.
My 6 year old one has had this maintenance since new and no problems so far, 140K miles.
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Old 07-27-2009 | 05:15 PM
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All my customers get Rotella T
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Old 07-27-2009 | 05:27 PM
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Amsoil !
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Old 07-27-2009 | 05:47 PM
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AMSOIL! I change mine every 20-25K.
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Old 07-28-2009 | 05:54 AM
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AMSOIL -- change every 10K
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Old 07-28-2009 | 06:19 AM
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I have run rotella for 2 years now
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Old 07-28-2009 | 10:32 AM
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amsoil change once a year or 15k miles
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