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Discussion Starter #1 (Edited)
Anyone know where Mopar 15W-40 diesel engine oil can be purchased aside from dealer?

What is equivalent aftermarket brand? Anyone tried Mobil DelVac 1300? I understand that currently, Mobil mfrs Mopar oil, but that could change any time.

Looking for recommendations for brand of oil for the 5.9L Cummins Turbo diesel.
 

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Mobil 1 is what I always use
 

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Delo, delvac, rotella, m1, are all popular brands that will match up with the Mopar. Just be sure it is ch or cj rated.
 

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We have always used Rotella 15-40 in everything.
 

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Valvoline Premium Blue
 

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I was told when your dealer does warranty work and they need to replace the engine oil they have to use the brand of oil that Dodge tells & sells them ( at the time I asked it was Mobil Delvac) but they can use any brand of oil they want for there every day quick lube oil change business.
 
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