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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

Quote:
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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Old 02-17-2015, 05:01 PM
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Re: Blackstone oil analysis for EcoDiesel

Second oil change was performed at +15843 km (+9844 miles). 2% oil life remaining on the EVIC indicator. Surprise! There's still plenty of TBN left on the Pennzoil Ultra Euro L 5W-30.

Oh, wait, no, that wasn't a surprise at all.

The data from this change is the leftmost numerical column. The data from the first oil change (the factory oil, changed at 6719 km/4175 miles thanks to the oil life firmware bug) is in the third column. Putatively the iron is high because it's still breaking in. We'll see next time.



I used Mobil 1 ESP for this change, so the next analysis will be a good comparison.
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Old 02-17-2015, 10:15 PM
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Re: Blackstone oil analysis for EcoDiesel

What did Blackstone say about the Iron being that high? Average for that amount of miles according to their chart was only 24, where you had 86. Lots of Iron flowing through the motor. Yikes!
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Old 02-18-2015, 06:06 AM
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Quote:
Originally Posted by chadg2 View Post
What did Blackstone say about the Iron being that high?
They said it was likely wear in and wasn't alarming for a second oil change. They did not recommend changing the oil any earlier.

Quote:
Average for that amount of miles according to their chart was only 24, where you had 86.
No, that's not how their universal averages work. Blackstone universal averages are literally an average of every sample they have ever tested on a particular model engine, regardless of age/mileage on the engine or the engine oil that was used.

Just to reiterate for everyone: I don't care how people spend their own time and money changing their oil—do it every 512 miles if that's your fancy—but please obtain and post UOA reports for us so we can all benefit from the additional data.
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