Important facts to remember about the new CJ4 Diesel oil:

1) Must be the only oil used in MY 2008+ motors (6.4L PSD) due to particulate filters now being used. Use of non CJ4 oil will clog these filters, as will using 500ppm diesel fuel and not ULSD 15ppm fuel.

2) Is backwards compatible for 2007 and earlier (6.0L and 7.3L). These motors can use any diesel fuel and either CI4+ or CJ4 oil since these older motor do not have exhaust particulate filters.

3) Extended oil drains with CJ4 are not advised due to lower TBN count.

4) Try to use CJ4 oil with ONLY ULSD fuel 15ppm. Use of 500ppm diesel will shorten oil life/usage due to lower TBN count.

5) CJ4 is a big step forward in better soot control, reduced wear, less filter plugging, reduced foaming and other critical beneficial aspects.

Below are a few charts/comments I pulled from the internet showing how CI4+ oils are better than the older and outdated CH spec'd oils. There was a chart just like this for comparing CJ4 to CI4+, but I could not find it again. As well, the other chart shows the improvements from spec to spec with reduced ash, sulfur and phosphorus (less is better in this case).

 

#1 and #2 seem to contradict each other. But, I know what you are trying to say...

 

The stuff you come up with is truly amazing Beach. Now we have pics & where are the graphs?????

#1 should say CAN ONLY BE USED . . .

 

Good catch Keith, the one that scares me more is the contradiction between #2 and #4. There is only one station around here with ULSD.

 

Well it Christmas...I wasn't gonna hit him with that one in the same post....LOL

 

Hey, it's Beachbum so he'll explain hiself, right . . .

 

Well good that the forum has not left you out of the Holiday spirit.

 

At the Lubrizol website they discuss how much better CJ4 oil is and post the following:

Performance tests for API CJ-4 are a combination of existing CI-4-Plus, CI-4 and CH-4 engine tests using today’s fuel (500 PPM S) as well as new engine tests using ultra low sulfur diesel fuel (ULSD = 15 PPM) that is mandated for on-road use. API CJ-4 represents a major performance upgrade over CI-4 Plus in terms of emissions control system durability as well as additional protection in terms of valve train wear, piston deposit control and soot handling capabilities over the previous categories. It also improves oil consumption characteristics and protection against bearing corrosion. Maximum chemical limits on sulfated ash (SA), Phosphorus (P) and Sulfur (S) for API CJ-4 lubricants have been set to address the emissions system compatibility and durability.

However, they posted the following graph and it appears to not fully show or explain what they have posted in writing... as the graph does not really depict better or reduced wear and less deposits... but hey, they may have just made the graph wrong!!!

 

No contradiction... the higher sulfur levels of 500ppm fuel will push the new CJ4 oil to its design limits... as it was only tested with this fuel. Use of the older, and being phased out fuel (500ppm) has higher sulfur levels so it will push the additive package beyond its limits in certain cases (as I have researched it).

If one has a good source for the new fuel, then use the new oil with confidence. If only the older fuel (500ppm), then sticking with CI4 oil or more frequent oil and filter changes may be in order???

 

I edited and re-wrote my original post upon reading your post... hope it now reads a little easier for the CJ4 oil impaired people out there???

Hey, this may qualify as a disability (oil usage and compatibility impaired people) under the American's With Disabilities Act???

 

It would only work under the Beach with disabilities Act...BDA...

...

 

Right there.... and there is a new one just above....

I have used them in this thread just for you... as I am sure looking at the pictures is more fun than reading huh???

 

I did too.....

 

Diesel oil changes from spec to spec and the years they came out... from the API website...

 

O.K. now Im confused, I went and bought mobil delvac 1300 super to run in my 06, I have access to both types of fuel, so what do I need to do here? Cant believe it's this complicated.