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What oil for 2020 cummins? - Merged oil threads

Rich2135 said:
Mopar or Fleetguard filters only and Rotella synthetic, it's a $10,000 engine don't skimp and buy in bulk not one at a time!
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So do buy in bulk?

Oil doesn't go bad?

I've mobil 1 sitting in the garage that fur sure looked like it went bad.
 
Brutal_HO said:
Pretty certain it has to be 5w40.

They (line workers) aren't going to care/know where the truck is going so they aren't going to mix oils depending on locale.
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Have you gotten used to the way the truck shifts yet? I definitely love the sound it makes when the full exhaust brake is engaged. I do have to admit it the shifting for me felt strange because the only other diesel truck that I had was a manual transmission. I cant believe how comfortable they ride.
 
SMK Shoe said:
T6 5w40 but it is getting hard to find. Seems like everyplace thinks heavy duty diesel oil has to be 15w40. Changing the oil every six or seven weeks along with fuel filters I have to be able to find and keep a large supply on hand.
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Might try home depot if there is one close , i just bought 12 gallons of rotella t6 5w/40 full synthetic for $24/gallon and they had at least 6 more boxes above in there storage rack. Used to buy it at walmart for $17.88/gallon less then a year ago but everything is going crazy now so i bought enough for 4 oil changes.
 
Cpschevy said:
Might try home depot if there is one close , i just bought 12 gallons of rotella t6 5w/40 full synthetic for $24/gallon and they had at least 6 more boxes above in there storage rack. Used to buy it at walmart for $17.88/gallon less then a year ago but everything is going crazy now so i bought enough for 4 oil changes.
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I'm waiting for a score like that.
 
rudyyoko said:
Have you gotten used to the way the truck shifts yet? I definitely love the sound it makes when the full exhaust brake is engaged. I do have to admit it the shifting for me felt strange because the only other diesel truck that I had was a manual transmission. I cant believe how comfortable they ride.
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The trans will adapt to your driving and smooth out over time. All modern autos are "self-learning."

The Aisin is much more aggressive on the downshifts with the EB on and TH.

Couple threads here on the trans if you look around.
 
At Walmart getting groceries. Just thought I’d check. No where needing an oil change. Just curious.

Valvoline 5w40 $24.97 5 quart. That’s the only 5w40 they have

They a few Super Tech 2.5 gallons of DEF $11.38
 
AEV_CUMMINS said:
I am using Amsoil 5w40 ss w/Amsoil filter. Mopar or Fleetguard for fuel filters. I plan on trying Schaeffers oil and probably interchanging between Amsoil oil filters and Fleetguard.
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Did you see any benefits running Amsoil vrs factory oil?
 

In case you haven't seen this before.

Specifically:

CAUTION! 15W-40 grade oil CAN NOT be used in any 2019 model year or newer 6.7L equipped vehicles due to the new designed valve train of this engine. If this oil is used, it will cause deposits to form in the Hydraulic Valve Lash Adjusters leading to undesirable noise, and/or engine damage.

And:

For all trucks, regardless of model year, located in areas where the ambient temperatures routinely fall below 0°F (-18°C) during the winter, it is required to use 5W-40 synthetic engine oil that meets US Material Standard MS-10902, and API CJ-4.
 
Hey all, I like doing casual research to find out what the real folks in the real world are doing, and one question I always like to see information on is this:

Which oil (brand and weight) are you using in your newer 6.7L Cummins, and why? Reasons why can be simple or elaborate, I don't care....just whatever reason you personally choose. To be honest I'd love to just see a lot of responses in here, and not much discussion regarding other folks posts. Just to keep it clean and be able to scroll through a lot of "data" easily.

Thanks in advance, and I'll start:

----------------


Valvoline 5w-40 Premium Blue full synthetic. I've always used Valvoline products, and they have always treated me well. I haven't even changed the oil in my truck yet (too new) but that's what's going in. :)
 
At the present time, if I can find three gallons on the shelf that are the same, it’s going down the hole. But normally I would stick with the above mentioned by Brutal_HO
 
Shell is the only oil i use in my cummins, there are 4 trucks locally both have over a million miles original engine always used shell…
 
Valvoline 5- 40 . Honestly all these oil have to meet the same standards . They are all good Shell ,Dello , Amzoil etc . It's all about marketing and convincing the customer that their oil is the best for their application . X percentage of engines will hit a million miles which is due to the thousands of that particular type being built . Most will not for one reason or another .
 
I buy the Shell Rotella T6 in bulk. I know I don't need to but I change the oil every 7,500 miles.
 
I am going with Rotella t5 ultra 10w30 or t5 10w30. Depends whats on the shelf.

What is the proper oil change volume on the 6.7? Im sure its in my manual, but that is far away at the moment.
 
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