Blackstone Laboratories' Oil Analysis
#31
Nordschleife Master
FlatSix911, nice report. Thanks for sharing. Given the elevated numbers for copper, I'd not extend the interval, if it were my Porsche. Your next report will tell you more info, this is just your baseline.
For comparison, the copper in my last report for the:
Boxster S- 8ppm. Approx 36,000 miles. Red Line 5W40.
993 Turbo- 6ppm. Approx 45,000 miles. Mobil V-Twin 20W50.
For comparison, the copper in my last report for the:
Boxster S- 8ppm. Approx 36,000 miles. Red Line 5W40.
993 Turbo- 6ppm. Approx 45,000 miles. Mobil V-Twin 20W50.
I am going to change the oil and then re-sample after a thousand miles to see if there is a trend.
The Blackstone tech I spoke with thought a common source of Copper in our cars can come from the oil cooler?
#33
King of Cool
Rennlist Member
Rennlist Member
That's an interesting data point as I've always felt that syn oils can last well past a year if the mileage is low. From the looks of your experience two years and 4,000 miles between changes is not unreasonable. I'll probably still change once a year but it's nice to know I can be late without much worry.
This is especially if the car sits long times in an environment with moisture in the air and/or temperature changes from below freezing & above.
When you drive the car (for a while, starting it or driving for 5 minutes is not adequate), moisture in the oil gets "burned" off.
#34
Nordschleife Master
The time limit is not about oil getting bad, it's about moisture in the oil which can corrode internal engine parts.
This is especially if the car sits long times in an environment with moisture in the air and/or temperature changes from below freezing & above.
When you drive the car (for a while, starting it or driving for 5 minutes is not adequate), moisture in the oil gets "burned" off.
This is especially if the car sits long times in an environment with moisture in the air and/or temperature changes from below freezing & above.
When you drive the car (for a while, starting it or driving for 5 minutes is not adequate), moisture in the oil gets "burned" off.
#35
Agent Orange
Rennlist Member
Rennlist Member
Here's my latest report. Last week I started the car for the first time since late December. After it warmed up I took a sample and sent it to Blackstone. I didn't change the oil and was curious how it's doing after a year in there. It seems everything is fine. I'll send them another sample in 2K miles as recommended. My engine currently has 107,455 miles and uses a quart of oil every 2400-2700 miles. My previous report is on p. 2 of this thread.
#36
Nordschleife Master
Here is a interesting article on the Oil Analysis process at Blackstone
Used Oil Analysis - How your Blackstone sample is processed
by David Newton
http://www.bobistheoilguy.com/used-oil-analysis-2/
by David Newton
http://www.bobistheoilguy.com/used-oil-analysis-2/
#37
Nordschleife Master
Here are the oil analysis results from Blackstone:
After another 1,500 miles the TBN (Total Base Number) is still strong at 6.7.
I would appreciate feedback on the reported high Copper level (23).
Does anyone have similar numbers for Cu? Worn valve guides?
After another 1,500 miles the TBN (Total Base Number) is still strong at 6.7.
I would appreciate feedback on the reported high Copper level (23).
Does anyone have similar numbers for Cu? Worn valve guides?
#38
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I do not need to add oil between changes.
#39
Nordschleife Master
Flat6, when I look at my UOA's copper is 7 (Boxster, +40K miles and about 7K drain intervals) and the Turbo is 5 (+45K miles and 5K intervals).
You are also consuming 2 quarts of oil during your interval. High, but not completely out of spec. I do not need to add oil between changes.
You are also consuming 2 quarts of oil during your interval. High, but not completely out of spec. I do not need to add oil between changes.
Any others with air-cooled engines?
#40
Yours seemed high. I would definitely do another analysis in another 1-2K miles for several cycles to see if/how the values increased.
You cut open the filters to see if you find metal or copper particles?
#41
Agent Orange
Rennlist Member
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Those numbers are high, change the oil more often and see how it goes. Just FYI, here are the reports from my supercharged RSA that I did quite a bit of track time with.
The first one had Castrol and I was not happy with what I got back...
The second one was Sean Penn and the car did much better. Lead was a little high because I ended up filling up with 100 octane leaded gas a couple of times at LRP (no cat):
The first one had Castrol and I was not happy with what I got back...
The second one was Sean Penn and the car did much better. Lead was a little high because I ended up filling up with 100 octane leaded gas a couple of times at LRP (no cat):
#42
Rennlist Member
Thought I would throw my 2-P into the thread. I'm worried about copper and lead. The mileage on the first test lists 3000 but it is likely more. Then when I had some oil pulled (not sure how the mechanic extracted it - may effect values?) and filled out the paper work I didn't realize I had put less than 1000 miles on the car.
Last edited by PiB993; 06-22-2013 at 04:22 PM. Reason: Switch from pdf to jpg for easier viewing - Thrice - spelling
#43
Rennlist Member
I use Blackstone and the most interesting comment that has come back is that they predicted I needed an air filter change due to high a Silicon content in the oil.
#45
Rennlist Member