11-22-14 Blackstone Comments:
DAVID: You're keeping your oil changes nice and steady, and that's great for establishing good trends. It can be hard to tell how an engine is wearing when the oil changes are all over the place, but your Saab is wearing well at 103,000 total miles on the engine. The TBN of 3.5 is still good too, so the oil can take even more use than this. You might not want to go too crazy though because sodium is increasing. It's not an additive in this oil, and if you're not adding any other oil/additives to this fill, it could be a small coolant leak. Stay at 11,000-12,000 miles for now.
My comments:
Interesting on the sodium as I have been using a little coolant in the last 6 months or so.
Viscosity at 62.6 and 10.95? A little low?
Engine is a 2.8 L Turbo and has had an aggressive software tune since new that has increased the hp from 280 to 320 and torque from 295 lbs. to 405 lbs.
Sorry about the formatting. Current report figures are the 3rd column.
Blackstone's Comments.
DAVID: This makes two good reports for your Saab. The longer oil run yielded higher iron, which is normal
since that metal tracks most directly with time on the oil. The other metals stayed about as steady as you
could hope for. The only questionable aspect is sodium. Mobil 1 doesn't use it as additive. It can show a little
coolant, but this much still isn't enough to say for sure since no potassium showed up. Watch your coolant
level just to be safe. The TBN was 2.0 showing active additive left. Try 14,000 miles on the next oil as long
as you're not losing coolant.
Code:
Oil M1 0W40 M1 0W40 M1 0W40
Miles in use 10,400 12,100 11,400
Miles 34,800 46,900 103,000
Sample Taken 11/07/11 4/20/11 11/22/14
aluminum 4 4 5
chromium 1 1 1
iron 38 42 35
copper 6 4 2
lead 1 0 0
tin 0 0 0
moly 59 63 74
nickel 0 0 0
manganese 2 1 1
silver 0 0 0
titanium 2 4 0
potassium 0 0 0
boron 85 85 89
silicon 12 10 10
sodium 26 46 56
calcium 2725 2888 2659
magnesium 21 31 26
phosphorus 784 832 785
zinc 766 871 914
barium 0 0 0
SUS Visc 65.1 65.3 62.6
cSt Visc 11.65 11.68 10.95
flashpoint 360 415 385
fuel .8 antifreeze ? ? ?
water 0.0 0.0 0.0
insolubles 0.4 .3 .2
TBN 3.1 2.0 3.5
Blackstone's comments on first assay.
DAVID: This first sample from your Saab V-6 Turbo looks great. Averages show what normal wear should look like after ~2,500 miles on the oil. You ran your oil a lot longer, yet metals are all within the average range. That's an excellent indication your engine is in great shape. The sodium that turned up is probably oil additive from a past oil, though it could also show coolant so we put a ? in the antifreeze category. We doubt any problems exist since wear is so low, though. Fuel is fine at 0.8% and the TBN of 3.1 shows active additive left (1.0 is low). Try 12,000 miles next."
So what is up with my sodium levels?
DAVID: You're keeping your oil changes nice and steady, and that's great for establishing good trends. It can be hard to tell how an engine is wearing when the oil changes are all over the place, but your Saab is wearing well at 103,000 total miles on the engine. The TBN of 3.5 is still good too, so the oil can take even more use than this. You might not want to go too crazy though because sodium is increasing. It's not an additive in this oil, and if you're not adding any other oil/additives to this fill, it could be a small coolant leak. Stay at 11,000-12,000 miles for now.
My comments:
Interesting on the sodium as I have been using a little coolant in the last 6 months or so.
Viscosity at 62.6 and 10.95? A little low?
Engine is a 2.8 L Turbo and has had an aggressive software tune since new that has increased the hp from 280 to 320 and torque from 295 lbs. to 405 lbs.
Sorry about the formatting. Current report figures are the 3rd column.
Blackstone's Comments.
DAVID: This makes two good reports for your Saab. The longer oil run yielded higher iron, which is normal
since that metal tracks most directly with time on the oil. The other metals stayed about as steady as you
could hope for. The only questionable aspect is sodium. Mobil 1 doesn't use it as additive. It can show a little
coolant, but this much still isn't enough to say for sure since no potassium showed up. Watch your coolant
level just to be safe. The TBN was 2.0 showing active additive left. Try 14,000 miles on the next oil as long
as you're not losing coolant.
Code:
Oil M1 0W40 M1 0W40 M1 0W40
Miles in use 10,400 12,100 11,400
Miles 34,800 46,900 103,000
Sample Taken 11/07/11 4/20/11 11/22/14
aluminum 4 4 5
chromium 1 1 1
iron 38 42 35
copper 6 4 2
lead 1 0 0
tin 0 0 0
moly 59 63 74
nickel 0 0 0
manganese 2 1 1
silver 0 0 0
titanium 2 4 0
potassium 0 0 0
boron 85 85 89
silicon 12 10 10
sodium 26 46 56
calcium 2725 2888 2659
magnesium 21 31 26
phosphorus 784 832 785
zinc 766 871 914
barium 0 0 0
SUS Visc 65.1 65.3 62.6
cSt Visc 11.65 11.68 10.95
flashpoint 360 415 385
fuel .8 antifreeze ? ? ?
water 0.0 0.0 0.0
insolubles 0.4 .3 .2
TBN 3.1 2.0 3.5
Blackstone's comments on first assay.
DAVID: This first sample from your Saab V-6 Turbo looks great. Averages show what normal wear should look like after ~2,500 miles on the oil. You ran your oil a lot longer, yet metals are all within the average range. That's an excellent indication your engine is in great shape. The sodium that turned up is probably oil additive from a past oil, though it could also show coolant so we put a ? in the antifreeze category. We doubt any problems exist since wear is so low, though. Fuel is fine at 0.8% and the TBN of 3.1 shows active additive left (1.0 is low). Try 12,000 miles next."
So what is up with my sodium levels?
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