Oil thoughts....please

[rbattelle]

Mobil Delvac MX 15w-40 is CI-4+ spec. I've been using it for several years now (my engine has never seen anything but CI-4 and CI-4+). I just wanted to point it out as an option. I believe 5 gallon pails are the smallest container, and I buy 25 gallons at a time from a local oil distributor.

-Ryan

 

[AH64ID]

Mobil Delvac MX 15w-40 is CI-4+ spec. I've been using it for several years now (my engine has never seen anything but CI-4 and CI-4+). I just wanted to point it out as an option. I believe 5 gallon pails are the smallest container, and I buy 25 gallons at a time from a local oil distributor.

-Ryan

I hadn't seen that one before. Looks like it's marketed as an Autrailia oil.

 

[amsoilman]

The AMSOIL AME is still being produced by AMSOIL and is available to anyone. The new API spec. CK-4 is much better for wear protection, as well as other benefits, such as Oxidative Thickening, Piston Deposits, Abrasive wear, Bore Polishing, Shear Stability, as well as After-Treatment Compatibility.
I think for the most part, when the CJ-4 spec came out, people didn't want to accept it, even tho it was a good oil. The CK-4 Specification is much better in nearly every category!

 

[AH64ID]

The AMSOIL AME is still being produced by AMSOIL and is available to anyone. The new API spec. CK-4 is much better for wear protection, as well as other benefits, such as Oxidative Thickening, Piston Deposits, Abrasive wear, Bore Polishing, Shear Stability, as well as After-Treatment Compatibility.
I think for the most part, when the CJ-4 spec came out, people didn't want to accept it, even tho it was a good oil. The CK-4 Specification is much better in nearly every category!

So is DME better than AME?

I was looking at it last night and I see it has slightly better high temperature/high sheer viscosity ratings, as well as a lower pour point. I did also notice that there isn't a wear scar test on the new oils.

My dad just bought a 2017 and is keeping his 2006, but wants to just run one oil so I've been meaning to research DME.

 

[AH64ID]

I just called and spoke with Amsoil. DME is going to provide better protection than AME will pretty much across the board, unlike CJ oil which was inferior to AME/CI but the emissions dictated it.

Zinc and Phosphorous are about 50 ppm lower with DME than AME but still in the 1200 phosphorous and 1300 zinc range.

I might consider switching at my next oil change, but that's not for about 10 months.

 

[jjdiesel]

Mobil Delvac MX 15w-40 is CI-4+ spec. I've been using it for several years now (my engine has never seen anything but CI-4 and CI-4+). I just wanted to point it out as an option. I believe 5 gallon pails are the smallest container, and I buy 25 gallons at a time from a local oil distributor.

-Ryan

That's great to know Ryan, thank you!...Opens up another option. There doesn't seem to be too many left when it comes to CI-4+.

 

[jjdiesel]

The AMSOIL AME is still being produced by AMSOIL and is available to anyone. The new API spec. CK-4 is much better for wear protection, as well as other benefits, such as Oxidative Thickening, Piston Deposits, Abrasive wear, Bore Polishing, Shear Stability, as well as After-Treatment Compatibility.
I think for the most part, when the CJ-4 spec came out, people didn't want to accept it, even tho it was a good oil. The CK-4 Specification is much better in nearly every category!

Wayne,...so are you saying that the CK-4 is better than the CI4+ for the older engines...or just that it's better than the CJ-4 in general?

 

[jjdiesel]

I just called and spoke with Amsoil. DME is going to provide better protection than AME will pretty much across the board, unlike CJ oil which was inferior to AME/CI but the emissions dictated it.

Zinc and Phosphorous are about 50 ppm lower with DME than AME but still in the 1200 phosphorous and 1300 zinc range.

I might consider switching at my next oil change, but that's not for about 10 months.

Nice to know John,..thanks! Too many options here and my head is starting to spin!

 

[JR]

Good to see the truth come out...may be 10 years overdue but better than never.

 

[amsoilman]

Yes John, the DME is a great oil, and they even advertise on the label, the oil gives 6 times better protection! Now there are some people who would just say that is just ADVERTISING, but as you most likely know, AMSOIL Inc. does not advertise anything that they can not backup.

 

[AH64ID]

Yes DME looks promising.

Good to see the truth come out...may be 10 years overdue but better than never.

Since CK just came out it can't be 10 years overdue. CJ oil was inferior to CI oil, but CK appears to be better.

 

[JR]

Yes DME looks promising.



Since CK just came out it can't be 10 years overdue. CJ oil was inferior to CI oil, but CK appears to be better.

I respect your opinion, knowledge, and everything you've contributed to this site so don't take this the wrong way. But from my perspective, 10 years of real world testing contradicts your statement. When many of the major oil companies have demonstrated the ability to surpass a million miles on what is essentially fleet spec dino CJ4 rated oil, I'm not so sure that what you quantify as a "better oil" is even relevant. I know I've said it before, but I personally know of examples of 5.9, 6.7, and 8.3 all ran off of Shell Rimula T3 oil since new. All over 10k hard hours and still running strong.

 

[AH64ID]

I respect your opinion, knowledge, and everything you've contributed to this site so don't take this the wrong way. But from my perspective, 10 years of real world testing contradicts your statement. When many of the major oil companies have demonstrated the ability to surpass a million miles on what is essentially fleet spec dino CJ4 rated oil, I'm not so sure that what you quantify as a "better oil" is even relevant. I know I've said it before, but I personally know of examples of 5.9, 6.7, and 8.3 all ran off of Shell Rimula T3 oil since new. All over 10k hard hours and still running strong.

Just because they have survived on CJ oil doesn't mean that it was a better oil than CI oil. The specs for CJ just weren't there based on it's criteria, CK beats those specs.

 

[ofelas]

How's that CK-4 DME been treating you John? Any observations since you used it in place of AME?

 

[AH64ID]

The only difference I can tell is that the DME runs slightly cooler and slightly more pressure than AME.

I haven’t towed anything with it thou, and I haven’t done a UOA.

I am selling the truck and won’t know for sure, but I’ll be switching the new truck to DME and doing UOA’s on it. Still the same basic internals on the 18 as the 05.

 

[ofelas]

Interesting; I'm finding the same with DZF vs AME.

Did you notice cooler temps or conversely, lower pressure with HDD as compared to AME?

I'll do a UOA on the DZF come Nov/Dec '19.

 

[AH64ID]

Interesting; I'm finding the same with DZF vs AME.

Did you notice cooler temps or conversely, lower pressure with HDD as compared to AME?

I'll do a UOA on the DZF come Nov/Dec '19.

When I ran HDD I didn't have an oil psi or oil temp gauge, so no way to tell.

 

[ofelas]

I got about 2psi idle/4psi at 1800rpm lower with HDD as compared to AME, but didn't have an oil temperature gauge then.

Using a laser temp gun, it ran a touch cooler than AME, which is likely why the oil pressure drop wasn't greater.

A balancing act of "more flow" vs "boiling off moisture", huh ?

 

[WalterJ]

I have had two "bad" Blackstone reports using Valvoline 5w-40 CK-4. Iron levels came up substantially with that oil. I've switched back to Lucas CI-4 15w-40 that I've had good reports from in the past. I'm convinced my engine is not happy with that CK-4 but I'll know for sure on the next report.

Thanks for "heads up"; my reports when using Valvoline 15W-40 were very "unremarkable". I'm now using the full synth 5w-40 for 1st time; have 9K on it & just changed filter (Donaldson EFL7349) prior to trip south.

 

[cmcdon5]

I have run "on sale" brand of the month oil and found that it can "shock" the UOA samples. The worst offender being Royal Purple that shot copper through the roof and typical of conventional to synthetic switch numbers. If you are running UOA the most stable thing to do is stick with the same brand unless the UOA shows problems with it. Change only when you have too. Otherwise you are left wondering if it was the oil brand change or a real problem from the UOA.

UOA showing problems with a oil choice?: For example ruining conventional oil in a Hot Rod diesel I built. One of the rare switch to synthetic success stories vs. more expensive larger oil coolers or removing the BD spool valve that was keeping more heat in the engine....

Does anyone use Rotella oil ?