A Mopar MasterTech sent me those photos.
I do not. I assume it was CK-4 oil that is found in Europe.
The Gen 3 engine is really hard on oil due to heat and pressure. Mopar published a Star Online Publication that said, "Using the oil specified for the GEN 2 engine in the GEN 3, will lead to deposits forming in the turbo charger, leading to reduced performance."
Based on this, I'm wondering if the mule test photos that were provided were from tests that ran CJ-4 oils rather than CK-4 oils since this bulletin says the Gen 2 recommends CJ-4 oils. CJ-4 is an outdated diesel oil spec based on older emissions tech and different engine pressures, whereas CK-4 is more compatible with modern tech, heavy pressures, tight tolerances, etc... It just doesn't make any sense that the Big 3 (Powerstroke, Cummins, and Duramax) that have the same emissions equipment and much higher internal pressures would use CK-4 oils and yet the third gen EcoDiesel is somehow "too hard" on CK-4 oils and requires a Euro spec that isn't specifically formulated for diesel applications.The Gen 3 engine is really hard on oil due to heat and pressure. Mopar published a Star Online Publication that said, "Using the oil specified for the GEN 2 engine in the GEN 3, will lead to deposits forming in the turbo charger, leading to reduced performance."
Rotella T6 5W-40 is a CK-4 oil, which meets and exceeds the older CJ-4, CI-4 PLUS, CI-4, and CH-4 API ratings.
The Gen 2 EcoDiesel is easy on oil, which is why you can run Rotella T6 for 10,000, 15,000, 20,000 and 25,000 mile intervals. The Gen 3, however, is very different. It shears oil quickly.
Correct. But the OEM recommends CJ-4 oils for the Gen 2, and the bulletin you posted above makes reference to CJ-4 oils rather than CK-4 oils. Thus, the Star Online Publication's statement that "using the oil specified for the GEN 2 engine in the GEN 3 will lead to deposits forming in the turbo charger" does not prove that CK-4 oils are a worse choice on average than MS-12991 oils. So far, the CK-4 oil I'm using (Amsoil 5W-40 Heavy Duty) has performed better than the MS-12991 oils I've used from a wear metals perspective. And if it doesn't lead to turbo deposit issues in the harsher Big 3 diesel engines and hasn't been addressed by MOPAR, I am highly skeptical it would cause any turbo issues for my EcoDiesel
The Publication also specifically mentioned Rotella T6, which is why I think it's important for everyone to know that Rotella T6 5W-40 is a CK-4 oil. If Rotella T6 doesn't meet spec for the Gen 3 engine, then we already know that a CJ-4 isn't approved either.
Until someone pulls a turbo and inspects it, we won't know for sure.
That is true. To be on the safe side, I run Archoil products to protect against turbo deposits from the fuel/exhaust side of things, and I do an Amsoil engine flush every 3rd oil change or so to protect against turbo deposits/coking from the oil side of things. We'll see how this routine works in the long run...I'm just doing my best to strike the balance between protecting the engine, emissions equipment, and turbo.
Your aluminum dropped from 4 ppm per 1,000 miles to 3.2 ppm per 1,000 miles; however, I bet your aluminum wear rate wouldn't be any better had you gone the extra 1,945 miles.
So do you attribute the aluminum to wear or flux? Is it simply the fact I didn't run it as long and the oil is poor over 5k miles?
Your viscosity dropped from a 5W-40 down to 5W-30, which isn't necessarily a major problem, but it shows how fast the Gen 3 engine can shear oil. Your Iron is looking better, though.
