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Maybe more detail?...
Everyone one should be doing oil analysis!
All the best
Dennis
The T1N ASSYST computer OCI calculations/prompt seem to have a good history....
Everyone [that owns a NCV3 Model 906] should be doing oil analysis!
All the best
Dennis
I guess I will be forced to to do the same. Buy a Ultra Guage or equivalent.That's an interesting article. Too bad Mercedes doesn't provide an indication of the DPF Regeneration cycle since they seem to think it can effect oil quality if terminated early. Many other diesel vehicles have a warning light to tell you when regeneration is in progress.
I set up my Ultra-Gauge with the EGT temps and a warning alarm at 1,000 degF. Now I always know when the regeneration is occurring.
Hi Old Crow:Not to be Crow picky...... "Latin America?" & is there a date associated with this guidance??????
Agree with Dennis... OA if you are worried, unsure, concerned, or nervous about your oil condition...
Question for Dennis. Mother implies implies that there is an oil condition monitor in addition to the HI/LO, miles/time. True? Not true? If yes...Is it still used on newer models?
For me its just guidance!Not to be Crow picky...... "Latin America?" & is there a date associated with this guidance??????
Agree with Dennis... OA if you are worried, unsure, concerned, or nervous about your oil condition...
Question for Dennis. Mother implies implies that there is an oil condition monitor in addition to the HI/LO, miles/time. True? Not true? If yes...Is it still used on newer models?
Kinda makes you question that Chermann engineering. Maybe that "capacitance" deal became a engineering dead end .... Sort of an oil sensor appendix if you will.Well Owner
Judging by the crap I see put into these engines and what I see and test after drain out from time to time I would say quite categorically that it ain't doing a very good job of indicting Quality!
Its an indication of "something", and I will leave it at that!
You see you have to put quality in I suppose to get some modicum of quality out!~
Dennis
https://sprinter-source.com/forums/showpost.php?p=498446&postcount=7Not to be Crow picky...... "Latin America?" & is there a date associated with this guidance??????
Agree with Dennis... OA if you are worried, unsure, concerned, or nervous about your oil condition...
Question for Dennis. Mother implies implies that there is an oil condition monitor in addition to the HI/LO, miles/time. True? Not true? If yes...Is it still used on newer models?
After reading the document for over the 10th time, I just realized it excludes Latin America. For example:Not to be Crow picky...... "Latin America?"
Low exhaust gas temperatures created by extended idling are not conducive to effective DPF regens. This means the regen will take longer which means more fuel consumed. Mercedes uses fuel injection after the combustion cycleto increase exhaust gas temperatures. This after injection of fuel can sometimes get into oil especially during idling conditions. These conditions increase the rate at which the oil is contaminated. Essentially what you're doing is adding engine cycles which are not counted by the mileage counter. For example an hour of idling could be equivalent to 50 or 60 miles of driving.After reading avanti's breakdown of the article, I realized that I fit in the category of "short distant service and high idling phases". So it is recommended that I get it out on the freeway for 20 minutes every 500km (310 miles). I do remember reading that here at one time by members.
What I don't understand is why would these condition reduce how often I change my oil? Wouldn't it mean I need to do the oil changes more often? Somewhere in the back of my mind I already decided to change the oil at 10k instead of 20k just to err on the side of caution. I don't understand why having fresh new oil more often isn't best.
1. From what I've read, 1 hour of idling on the 4 cylinder uses around 0.4 gallons of fuel. I think I got that info from a grooming van builder. Not sure how accurate, but that's the usage I've been using in my cost estimations.Low exhaust gas temperatures created by extended idling are not conducive to effective DPF regens. This means the regen will take longer which means more fuel consumed. Mercedes uses fuel injection after the combustion cycleto increase exhaust gas temperatures. This after injection of fuel can sometimes get into oil especially during idling conditions. These conditions increase the rate at which the oil is contaminated. Essentially what you're doing is adding engine cycles which are not counted by the mileage counter. For example an hour of idling could be equivalent to 50 or 60 miles of driving.
For whatever percentage of your total fuel consumption is used in idling I would reduce your oil change interval by twice that amount. For example if you burn 20% of your fuel idling I would decrease your oil change interval by 40%. (Up to 30% of the total fuel consumption. Anything above that will require regular oil testing as the extended idling will have deleterious effects) This can be mitigated if you drive regularly on the highway after every single idle period for 20 minutes. This allows the engine to enter regen during high load. This is much more efficient at clearing the DPF.
The other important factor in the oil contamination is soot loading. During idling the EGR percentage is much higher as a lot more inert gases are needed to keep the NOX production down. Higher levels of EGR means more soot is recirculated back into intake and has an opportunity to get into the oil. This is the other reason that extended idling increases soot loading which is a major factor in oil life.
If you're idling is less than 1 or 2% of your total fuel consumption there is no need to adjust your oil change intervals.