3rd Gen Engine and Drivetrain -> 2007 and up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

oil brand prefrence?

Old Jul 18, 2007 | 03:26 AM
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Bigwhitey3500's Avatar
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oil brand prefrence?

I know I need CJ-4 oil but which flavor? Delo, Rotella, Castrol? Does it matter? Costo has the Delo just a little cheaper than Wal-Mart. Thanks.
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Old Jul 18, 2007 | 03:34 AM
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They are all good. This thread, like so many before it, will start an oil brand war.


There was a poll a while back that showed about 40ish percent of the DTR members who voted used Rotella 15w40. All the others, including synthetics, shared the rest.

I use Rotella with Fleetguard Stratapore filters changed every 5k.


IMO, the important thing is to pick a major brand and change it regularly on a schedule.


On edit...here is an example of a poll taken a while back....https://www.dieseltruckresource.com/...ad.php?t=62163
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Old Jul 18, 2007 | 08:27 AM
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Rotella T for me, every 3500-4k.
Filters- LF3894s
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Old Jul 18, 2007 | 11:20 AM
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These 3, Chevron Delo 400, Valvoline Cummins Blue and Mobil Delvac are the best dino oils to use in your engine.
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