I just bought a kleenoil bypass filtration, filters down to a micron with a very high efficiency (apparently 98%). I sent an oil sample away pre-bypass, I'll send another one after the same amount of miles. I can't wait to see the difference.

Has anyone else installed a bypass system, and noticed a difference? Have you extended drain intervals? I imagine with the new ULSD, our oil will be in much better shape (TBN will decrease much slower).

Maybe even a switch to a good synthetic(I was thinking shell rotella T synthetic since it's easy to get here) might be in order, but I'll do a cost analysis and see what happens.

I wouldn't think of that before, because the oil probably had too much soot in it anyways.

 

[quote="allan5oh"]I just bought a kleenoil bypass filtration, filters down to a micron with a very high efficiency (apparently 98%). I sent an oil sample away pre-bypass, I'll send another one after the same amount of miles. I can't wait to see the difference.

Has anyone else installed a bypass system, and noticed a difference? Have you extended drain intervals? I imagine with the new ULSD, our oil will be in much better shape (TBN will decrease much slower).

even if the oil is clean, the additives still deplete at about the same rate. that is the main argument against synthetic oils in the crankcase; they (used to) use the same additives.

30% increase in egr duty cycle for 07 engines; this will require a higher initial base number (increased crankcase acidity), thus the new cj-4 oils.

in 02, oil additive packages were updated to ci-4 for the same reason. some of these engine oil formulations were not acceptable for cat engines... as they did not use egr, and still don't* for 07

 

I agree, that is what I'll be paying attention to. I have a pre-EGR engine, also switching from 500 ppm sulfur to 15 ppm sulfur fuel should actually dramatically help with the situation, we only have ULSD up here in Canada. A lot less sulfuric acid.

Quote:

30% increase in egr duty cycle for 07 engines; this will require a higher initial base number (increased crankcase acidity), thus the new cj-4 oils.

Obviously my engine does not require the new oils, but do you know how much the TBN will go up? I've heard too much TBN can be a bad thing too.

Quote:

in 02, oil additive packages were updated to ci-4 for the same reason. some of these engine oil formulations were not acceptable for cat engines... as they did not use egr, and still don't* for 07

Awww come on bob, we BOTH know it's EGR with a different name. Just because they're taking it from a different place(which I think is a *GREAT* idea), doesn't mean it's a totally different animal and they can use a different name. The reason they did this was marketing, back in 2002 CAT stated that EGR is a stop-gap measure and ACERT technology will take them to 2007 and beyond. I guess they were wrong! Also many of their salesman were pushing how evil EGR is.

 

quote="allan5oh"]

I agree, that is what I'll be paying attention to. I have a pre-EGR engine, also switching from 500 ppm sulfur to 15 ppm sulfur fuel should actually dramatically help with the situation,

you probably switched to ulsd more than 6 months ago

we only have ULSD up here in Canada. A lot less sulfuric acid.

Quote:

30% increase in egr duty cycle for 07 engines; this will require a higher initial base number (increased crankcase acidity), thus the new cj-4 oils.

Obviously my engine does not require the new oils, but do you know how much the TBN will go up? I've heard too much TBN can be a bad thing too.

whatever is being used to clean up the crankcase acids (ash??) is going to increase.

basic is the opposite of acidic. it can be damaging but often attacks different materials than acids... i'm thinking that "fresh" engine oil isn't causing an increased rate of corrosion, erosion, scaling, etc

Quote:

in 02, oil additive packages were updated to ci-4 for the same reason. some of these engine oil formulations were not acceptable for cat engines... as they did not use egr, and still don't* for 07

Awww come on bob, we BOTH know it's EGR with a different name. Just because they're taking it from a different place

the "place" they take it from is VERY relevant, and it is the reason they waited for the dpf before adding egr.

yes, it is still egr but cat does not return a highly polluted gas back into the combustion chamber. cat's cgi system returns clean, filtered, inert gas to reduce nox...

ingeniously simple in my opinion

(which I think is a *GREAT* idea), doesn't mean it's a totally different animal and they can use a different name. The reason they did this was marketing, back in 2002 CAT stated that EGR is a stop-gap measure and ACERT technology will take them to 2007 and beyond. I guess they were wrong! Also many of their salesman were pushing how evil EGR is.[/quote]

 

Yup. Would be interesting to know how much the ULSD changes oil samples. I wish I would have started sooner.


So basically don't worry about it? Do you think the older oil formulations would work better in my engine? As opposed to the oil now made for 2007 engines?

I agree except it wont be inert. If it was inert before going into the DPF, it would be inert coming out, vice versa as well. The only difference is there wont be as much soot going into the engine, which is a very good thing. I do agree it's a good idea.