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Duramax oil #12588624 01/21/18 08:38 PM
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dk2429 Online Content OP
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2006 LBZ bone stock.

When I got the truck a few months ago, I did an oil change as soon as I got it.. Rotella T4 15w40. Time for another change.. I was going to just get the 10qts of T4 but saw that Delo 400 was cheaper. After looking around, it seems as if people are converting from Shell and now are saying the Delo is the better stuff. What do y'all think..? I don't see many people speak of Delvac either. Not intrested in synthetic.


Majek 22 Extreme/225 Optimax Pro XS hauled by a 2500HD Duramax



Re: Duramax oil [Re: dk2429] #12588743 01/21/18 09:45 PM
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The T4, Delo and Delvac are all good oils... Id just stick with the T4 since your not wanting to go Synthetic and its what you have been running. I run T4 in my LBZ and alway been happy with it.

Re: Duramax oil [Re: dk2429] #12588830 01/21/18 10:40 PM
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T4, Delo 400, Delvac 1300 are all premium oils. I like to stay the same, so I would stick to T4. All will yield similar results, I personally am partial to Delvac. I ran a fleet of heavy equipment on Delvac, later ran a frac and cement fleet on Delo, and currently run a cement and small frac fleet on Delvac. Over the years thru oil sampling I do believe Delvac has a slight leg up in their detergent package. You wont go wrong with any of them.


Re: Duramax oil [Re: dk2429] #12589823 01/22/18 12:56 PM
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I've been running Amsoil in my LB7 since the first oil change in 2003. Combine that with their EAO52 filter and you won't be disappointed. I change it once a year.

Amsoil Signature Series Max-Duty Synthetic Diesel Oil

Last edited by ClarkBird; 01/22/18 12:56 PM.

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Re: Duramax oil [Re: dk2429] #12589871 01/22/18 01:53 PM
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redchevy Offline
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Have run the equivalent of T4 in our two duramaxes since new they both have over 200k miles on them, run like a top and don't use any oil. They run like new.

Re: Duramax oil [Re: dk2429] #12589963 01/22/18 02:56 PM
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HOU Razorback Offline
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I ran Delo 400 in a LB7 and LBZ Duramax.

i like Delo oil, its a great oil and I love the money I save over Rotella!

Re: Duramax oil [Re: dk2429] #12590537 01/22/18 08:28 PM
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dk2429 Online Content OP
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Thanks folks. I'm probably gonna get the 2.5 gal jug of Delvac 1300 this go around.. It's $22 here. Wanna see if there really is any difference.

From what I've read, Delvac 1300 is the factory oil for the Duramax


Majek 22 Extreme/225 Optimax Pro XS hauled by a 2500HD Duramax



Re: Duramax oil [Re: dk2429] #12590850 01/22/18 11:04 PM
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Re: Duramax oil [Re: Bassdeer] #12591347 01/23/18 04:20 AM
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dk2429 Online Content OP
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Originally Posted By: Bassdeer


Maybe I'm seeing that wrong.. But $10 for a quart of that stuff?????? That's $100 worth of oil! I'll go synthetic T6 before I do that!


Majek 22 Extreme/225 Optimax Pro XS hauled by a 2500HD Duramax



Re: Duramax oil [Re: dk2429] #12591603 01/23/18 01:46 PM
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Originally Posted By: dk2429
Originally Posted By: Bassdeer


Maybe I'm seeing that wrong.. But $10 for a quart of that stuff?????? That's $100 worth of oil! I'll go synthetic T6 before I do that!


Sign up for the preferred customer program and the price goes way down. You will pay a small fee up front but as you continue to use their products it pays for itself. They offer free shipping a few times a year which helps, too.


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Re: Duramax oil [Re: dk2429] #12591677 01/23/18 02:19 PM
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Originally Posted By: dk2429
Originally Posted By: Bassdeer


Maybe I'm seeing that wrong.. But $10 for a quart of that stuff?????? That's $100 worth of oil! I'll go synthetic T6 before I do that!


I'm a preferred customer and pay $7.00 a quart so yea $70.00 but I only change it once a year.

Re: Duramax oil [Re: dk2429] #12592605 01/24/18 12:29 AM
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If you want to run 5-6000 mile oil changes go with any of the good conventional 15-40 oils. Rotella and Delo are both good.

Rotella T6 is a cheaper synthetic but for 10 thousand mile oil changes its good oil.
In any case get a good microfiber filer. They hold more than a conventional filter.


Re: Duramax oil [Re: dk2429] #12593016 01/24/18 04:04 AM
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Have talked to a few people runnin rotella t6 for 15000 drain interval with oil analysis and good results.

Re: Duramax oil [Re: dk2429] #12593061 01/24/18 04:45 AM
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Thanks guys, got Delvac 1300.

I just can't see the extra $ for synthetic personally.

Last edited by dk2429; 01/24/18 04:45 AM.

Majek 22 Extreme/225 Optimax Pro XS hauled by a 2500HD Duramax



Re: Duramax oil [Re: ClarkBird] #12619618 02/10/18 02:17 AM
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Originally Posted By: ClarkBird
I've been running Amsoil in my LB7 since the first oil change in 2003. Combine that with their EAO52 filter and you won't be disappointed. I change it once a year.

Amsoil Signature Series Max-Duty Synthetic Diesel Oil


Me too

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