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Discussion Starter #1
In case anyones interested I sent a sample of oil off at 24,500 miles to get an analysis by blackstone labs. Here are the results after using the oil for 3,500 miles:
Sample
Alluminum 6
Chromium 0
Iron 5
Copper 25
Lead 0
Tin 1
Molybdenum 139
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 1
Boron 172
Silicon 12
Sodium 7
Calcium 2711
Magnesium 17
Phosphorus 640
Zinc 832
Barium 0

Everything came out very well according to them. The only thing out of place was the copper, which is not high enough to worry about and they said likely caused by my recent switch to mobil 1 oil. Everything else was great. No oil or anti freeze was found in the oil and only a normal trace of fuel was found. I'll probably do another analysis around 35... 40 thousand miles to track the wear. So far things are looking good and a while back Electric Troy posted his oil analysis and it's very close to mine.
 

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More Info Please: You say Mobil 1. What viscosity is it?

Thanks!
 

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Discussion Starter #4
0W-20, the report said the oil weight was in the 20 range still.
 

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There is another oil report thread here:

http://www.insightcentral.net/forum/viewtopic.php?t=3834

but I chose to revive this one since Rick had posted numbers and they can be compared:

Here's my numbers from Blackstone labs report:

Mobil 1 0/20
Never added a drop.
Miles on engine 48643
10,009 miles(that's right)on oil, probably try 12/12.5 as they said my TBN (total base number) was 5.3 so there is plenty of additive left. 1.0 is low.
NAPA Gold filter

Alluminum 5
Chromium 1
Iron 8
Copper 9
Lead 0
Tin 1
Molybdenum 164
Nickel 0
Manganese 0
Silver 0
Titanium 0
Potassium 1
Boron 116
Silicon 15
Sodium 5
Calcium 2370
Magnesium 12
Phosphorus 702
Zinc 828
Barium 0

Randall
 
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