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  #13  
Old 08-01-2014, 07:06 AM
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Re: Blackstone oil analysis for EcoDiesel

Those are great numbers all around. I would not worry about flash point because most oils flash around 370F so 405F is still excellent. Our engines are not that susceptible to flashing oil like gas powered turbo engines are (I have a BMW 335 and this does coke the intake valves). TBN is outstanding telling me that the 10K mile oil changes might be realistic.
Thanks for posting your results...
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Old 08-01-2014, 08:17 AM
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Re: Blackstone oil analysis for EcoDiesel

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Originally Posted by Roadkill View Post
That lower flashpoint is caused by a bit of fuel dilution in the oil. Note your 1.0% in the fuel column, that will normally read lower with more highway, non stop-n-go miles. That is usually caused by excess idling, many cold starts in winter weather and is fairly normal reading for mostly city driving. It can also be caused by excessive regens, but that does not seem to be a problem being reported on this site.

I've been doing UOA for 9 years and had one similar to that when I was doing quite a bit of short distance (< 5 miles) city driving in winter. This was on a CRD Jeep without a DPF or regens. In my case, the engine oil never really warmed up enough to evaporate the fuel that gets past the rings when the engine is cold.

IMO, nothing to be concerned about, unless your driving was all high speed, long distance, high temperature driving on that UOA interval.

That silicon reading at 36 is a bit high. You may want to check your air filter to see if it's seated properly and the clamp on the airhose connected to the airbox is not loose.
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Old 08-01-2014, 08:58 AM
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Re: Blackstone oil analysis for EcoDiesel

Worry not brother iboughtajeep !

It is the spec'd oil for our motors PLUS it is ALSO suitable for motors WITHOUT particulate filters .

I will be sending my next oil change off to Blackstone for a UOA. Didn't bother with the first change at 6450 miles as I would rather see it on the oil change after I replaced after the factory fill.
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Old 08-01-2014, 09:37 AM
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Re: Blackstone oil analysis for EcoDiesel

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Originally Posted by Ranger1 View Post
That lower flashpoint is caused by a bit of fuel dilution in the oil.
Thanks. That was what I suspected, as it seemed to stand to reason. However, given that it was just speculation on my part I didn't say anything.

You're correct: I would say well over half of the distance covered by this analysis was from short trips in town. Did wonders for the average fuel efficiency (haha). Now that I got the firmware update I hope will be getting more than ~4k miles out of an oil change... the TBN seems to indicate there was plenty of life left in the oil.

Anyway, it would be great if others share their own UOA reports for our engine.
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Old 08-11-2014, 05:59 PM
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Re: Blackstone oil analysis for EcoDiesel

I have one of the later builds with the updated software. Mine is on pace in the EVIC to be at almost exactly 10,000 miles before calling for the first oil change (I have about 7,000 miles on the car). I am going to change it now since it is the first time. However, I feel better about lettiing it go closer to the full 10,000 mile range after looking at some of the data here. Thanks for sharing the information!
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