Most stringent HDEO spec?

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This is common heading from Edmonton to Fort McMurray. Coking ovens, refinery parts, mining parts all travel this way. They route traffic across to the oncoming lane during transit, but when the highway was just 1 lane in each direction you could get stopped for hours while these transit north. Two trucks pulling and one pushing with a spare to swap out and refuel.

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This is common heading from Edmonton to Fort McMurray. Coking ovens, refinery parts, mining parts all travel this way. They route traffic across to the oncoming lane during transit, but when the highway was just 1 lane in each direction you could get stopped for hours while these transit north. Two trucks pulling and one pushing with a spare to swap out and refuel.

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Awesome. What oil do they use?
 
Any oil meeting the spec for the Cummins QSK95 rail engine.

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It actually runs the opposite of what you think.

The 95L has no EGR (at least not when I was on the assembly line Tuesday, LOL) and has soot levels MUCH less than something like an X15 would run.

What's good enough for the 95 is likely not good enough for the X15.
 
It actually runs the opposite of what you think.

The 95L has no EGR (at least not when I was on the assembly line Tuesday, LOL) and has soot levels MUCH less than something like an X15 would run.

What's good enough for the 95 is likely not good enough for the X15.
Interesting, thanks for the input! Do you know what oil it specs? I couldn’t find it after searching everywhere.
 
You can't really compare specs to see which is "most stringent" unless you first define what "stringent" means? Wear rate? Oxidation rate? Soot carrying capacity?

CES 20086 is a stringent spec, but it's for diesels with EGR and aftertreatment. If you don't need the oil tuned for EGR and aftertreatment (SAPS <1%) You'd probably be better service with a higher SAPS CI-4+ version like CES 20078 (EGR-only engines, no aftertreatment).

Fun fact-- one element of the Cummins CES oil certs is passing ASTM tests that use CAT and MACK engines in addition to the Cummins-engine based ASTMs that test on the ISM and ISB.
 
You can't really compare specs to see which is "most stringent" unless you first define what "stringent" means? Wear rate? Oxidation rate? Soot carrying capacity?

CES 20086 is a stringent spec, but it's for diesels with EGR and aftertreatment. If you don't need the oil tuned for EGR and aftertreatment (SAPS <1%) You'd probably be better service with a higher SAPS CI-4+ version like CES 20078 (EGR-only engines, no aftertreatment).

Fun fact-- one element of the Cummins CES oil certs is passing ASTM tests that use CAT and MACK engines in addition to the Cummins-engine based ASTMs that test on the ISM and ISB.
Just like we think MB 229.52 is a stringent spec. Here after treatment is a given because deleting it on a off high way machine is jail time.
 
Interesting, thanks for the input! Do you know what oil it specs? I couldn’t find it after searching everywhere.
House oil we run all our testing on is just current spec CK4 Premium Blue 15w40.

So if you have a 95 and use Premium Blue, you're using the same oil that we used for all the testing and validation.

That's generally true of all Cummins Engines. The USA-based tech centers all use Premium Blue 15w40. Not sure what they use in China and India.
 
It looks like Valvoline still offers a higher SAPS CES 20078 oil called “Premium Blue 7800 Plus.”

If i had a non-aftertreatment diesel, that’s what I’d be running if I wanted a GrpII oil. Otherwise, I’d be running Delvac 1.
 
no american diesel is working hard, even your semis dont pull half of our weights. i want to know real engine oil specs, no whatever ford, chevy and dodge are doing. Want to know what cat, Volvo, scania, detroit. Not a powerstroke going to wallmart.
You want to know a dumptruck or something? Bit of a joke what you're saying. The conditions working on the ranch here on the Gulf Coast of Texas I'd put against anywhere on the planet.
 
Yes, but the truck bearly takes any load there since it only have 3 axels. You have a trailer with 8 axels carrying most of it, which explains the length of it. Do US semis have air suspension? how about axel lift? Just curious 🧐 🙂
I didn't see this answered directly, so here goes:

Yes, U.S. semi-trucks are all equipped with "air ride," except for the front/steering axle. That one is leaf springs.

The rest of it, the 2 (or 3) drive axles have giant airbags that carry the weight and can be used to lower/raise as needed. The trailer axles also have the same air ride setup.

Most (if not all) trucks also have smaller air ride bags for the cab, and the driver's chair is also on air suspension.
 
no american diesel is working hard, even your semis dont pull half of our weights. i want to know real engine oil specs, no whatever ford, chevy and dodge are doing. Want to know what cat, Volvo, scania, detroit. Not a powerstroke going to wallmart.
My L5P Duramax disagrees. It’s currently filled with Delvac Extreme 15w40. FWIW… 39,680 lbs is ~18,000 kg.
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