30k mile UOA Report

The data is from my '99 SOHC using Amsoil Bypass filtration ( http://www.explorerforum.com/forums/showthread.php?t=126111&highlight=bypass+oil+filter ) and Amsoil Series 2000 0W30 ( Dead Link Removed ). The mileage on this oil sample is 30,625 miles.

No oil filters were changed and no make up oil added at this sampling.

The UOA on all the samples was performed by Blackstone Labs ( Dead Link Removed ).

The first ( of 7 ) column represents the virgin oil ( VOA ), the second is a previous sample of this oil at 5120 miles, the third is another previous sample at 7679 miles, the fourth is a sample at 19,848 miles, the fifth is a sample at 25k miles, the sixth is the current sample ( 30625 miles ) and the last represents Blackstone’s average of data collected for this type motor.

Aluminum 0 2 5 6 8 8 5
Chromium 0 1 1 1 2 1 1
Iron 2 8 14 23 31 34 16
Copper 0 5 9 8 10 10 6
Lead 0 2 5 4 5 4 4
Tin 0 0 1 1 1 0 1
Molybdenum 0 4 7 10 10 13 43
Nickel 0 0 0 1 1 2 0
Manganese 0 0 0 0 0 1 1
Silver 0 0 0 0 0 0 0
Titanium 0 0 0 0 0 0 0
Potassium 0 0 0 0 0 2 2
Boron 64 31 28 15 14 13 47
Silicon 4 5 7 13 13 15 9
Sodium 0 1 2 3 5 15 18
Calcium 1722 2054 2176 1907 1949 2495 2039
Magnesium 598 751 831 525 567 182 202
Phosphorus 822 935 879 736 753 639 748
Zinc 958 1081 1021 875 1003 779 893
Barium 0 0 0 0 0 0 1
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TBN 12.0, 4.9, 3.3, 2.3, 2.0 2.1

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This sample Typical Amsoil 0W-30
Viscosity @ 210degF: 65.8 56-64
Flashpoint in deg F 410 390 >395
Fuel% 0.0 <2.0
Antifreeze% 0.0 0.0
Water% 0.0 0.0
Insolubles % 0.5 < 0.6


Blackstone's comments: AL: No problems were found in the latest sample from your Explorer. Iron increased to the highest level that we've seen in recent history but is likely due to the long oil run. Wear generally increased in this sample but nothing was high enough to warrant any serious concern. The viscosity of the sample was just slightly high but shouldn't be a problem and no harmful contaminants were found. The TBN read 2.1 so you had little active additive remaining. 1.0 is considered too low for extended use. For an oil run this long wear looks great!


My conclusions:
This UOA validates extended OCI using bypass filtration. Even though this oil is still “good” and I could get more miles out of it, but based on this UOA, especially the thickening of the oil to 15w40 and my quest for mileage, I changed the oil and filters and will go for another 30k or more miles ( with UOAs ). Yje new oil I used was Amsoil Signature Series 0w30 oil (Dead Link Removed ) and Amsoil EaO/EaBP filters.

This motor has never used nor leaked any oil whatsoever.

Very cool!
I've never run synthetic oil in my vehicles, only my streetbike. Changing the oil every 20-30k miles sounds nice though
You ran the same Amsoil filter for that full duration too?

The high iron reading is most likely from ring and cylinder wear.
EP additives are depleted also. IMHO, that's way too long to
go between oil changes; maybe 10K max.....

But Al, I salute you for using your engine as a test bed.

Congratulations on your excellent 30K OCI! It appears from the results that you could go about 10K without any detectable signs of wear whatsoever. Outstanding with the light grades you run. Any idea why your Magnesium's so high and your Molybdenum's so low?

how much did you pay for that oil change ? 30k is way too long..especially if you ever submerge your vehicle or go through water.

96XLTRanger said:

how much did you pay for that oil change ?

Click to expand...

Not sure what you are asking? Please elaborate.

30k is way too long..especially if you ever submerge your vehicle or go through water.

Click to expand...

The UOA doesn't support your contention.

how much was 5 quarts and a filter

96XLTRanger said:

how much was 5 quarts and a filter

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I use 6 quarts and 2 filters ( EaO15 and EaBP90 ).

You can find the prices at Dead Link Removed

very interesting. I didn't know you could use 2 filters. How do you set that up? How do you prepare your engine for Amsoil?

96XLTRanger said:

very interesting. I didn't know you could use 2 filters. How do you set that up?

Click to expand...

Take a look at http://www.explorerforum.com/forums/showthread.php?t=126111&highlight=bypass+oil+filter

How do you prepare your engine for Amsoil?

Click to expand...

Drain old oil, add new. New filters, of course. Simple as that.

if amsoil 0w30 is soo efficient, wouldn't it end up freeing debris and crud in my oil/oil pan, resulting in an oil screen clog?