From Polaris Labs.
Wear Metals
(Element, Virgin, Used)
Fe, 1, 29
Al, 0, 8
Cu, 1, 26
Pb, 0, 4
Sn, 0, 2
Contaminant Metals
Si, 15, 24
Na, 11, 19
Multi-source Metals
Mo, 670, 743
Sb, 0, 6
B, 120, 47
Additive Metals
Mg, 14, 55
Ca, 2469, 2741
P, 1221, 1204
Zn, 1504, 1480
Fuel dilution Soot Water
KV100: 10.5 virgin, 11.6 used
TBN: 8.55 virgin, 2.64 used
Oxidation: 108 virgin, 109 used
Nitration: 8 virgin, 15 used
5800 miles on oil, 191k miles on vehicle
Polaris Comments:
Lube oxidation may be increasing. However, in order to properly evaluate oxidation for synthetic oil, we need to know the Lube Manufacturer, Lube type, and grade. Base number is moderately low. Abrasives are at a minor level. Please provide missing lube type. Please submit a new sample of this fluid for baseline reference.
These comments are totally off-base and ignorant: they put all of the virgin baseline reference data right on the analysis sheet. Apparently the tech didn't bother to check their own numbers when writing his comments.
But anyway, wear metals are OK, and Silicon is low. Viscosity has increased by about 10%, but oxidation and nitration are still low. What else could be causing the viscosity to increase if there is no oxidation?
Fuel dilution is low. TBN is less than 35% of virgin, which is Polaris' trigger for an oil change, but I'm not wanting to dump it after only 5800 miles. The OLM has already signalled for an oil change, which is what prompted the UOA. The only hard running I have done on this load of oil was two track days at Daytona in December. VERY HARD RUNNING. That probably wiped 2000 miles off the oil life in itself.
What do you all think: should I try to extend, or change it now?
Wear Metals
(Element, Virgin, Used)
Fe, 1, 29
Al, 0, 8
Cu, 1, 26
Pb, 0, 4
Sn, 0, 2
Contaminant Metals
Si, 15, 24
Na, 11, 19
Multi-source Metals
Mo, 670, 743
Sb, 0, 6
B, 120, 47
Additive Metals
Mg, 14, 55
Ca, 2469, 2741
P, 1221, 1204
Zn, 1504, 1480
Fuel dilution Soot Water
KV100: 10.5 virgin, 11.6 used
TBN: 8.55 virgin, 2.64 used
Oxidation: 108 virgin, 109 used
Nitration: 8 virgin, 15 used
5800 miles on oil, 191k miles on vehicle
Polaris Comments:
Lube oxidation may be increasing. However, in order to properly evaluate oxidation for synthetic oil, we need to know the Lube Manufacturer, Lube type, and grade. Base number is moderately low. Abrasives are at a minor level. Please provide missing lube type. Please submit a new sample of this fluid for baseline reference.
These comments are totally off-base and ignorant: they put all of the virgin baseline reference data right on the analysis sheet. Apparently the tech didn't bother to check their own numbers when writing his comments.
But anyway, wear metals are OK, and Silicon is low. Viscosity has increased by about 10%, but oxidation and nitration are still low. What else could be causing the viscosity to increase if there is no oxidation?
Fuel dilution is low. TBN is less than 35% of virgin, which is Polaris' trigger for an oil change, but I'm not wanting to dump it after only 5800 miles. The OLM has already signalled for an oil change, which is what prompted the UOA. The only hard running I have done on this load of oil was two track days at Daytona in December. VERY HARD RUNNING. That probably wiped 2000 miles off the oil life in itself.
What do you all think: should I try to extend, or change it now?
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