I sent off for this VOA because of the disappointing analysis I got a few weeks ago.
MPT UOA
The fine folks at MPT sent me some replacement oil to try it again at a lesser interval, they believe the UOA was affected by some type of fuel additive (I don't think I even used any). I still don't see how the TBN would be so low.
Blackstone Comments:
Thanks for the notes. We found some lead in this sample, so we ran it twice and it was still there,
so that could account for a bit of what was found in your Sentra's sample. Silicon is an antifoaming additive
and it's harmless in that form. There were some unusual additive levels in this oil. Note zinc. It read lower
than phosphorus, while in most oils it's the other way around. We also found a lot of molybdenum (antiwear
additive) and that could be why insolubles read high; it's probably just additive falling out of suspension. The
TBN was strong at 11.5, since 1.0 is low.
ALUMINUM-1
CHROMIUM-0
IRON-1
COPPER-1
LEAD-3
TIN-0
MOLYBDENUM-943
NICKEL-0
SILVER-0
TITANIUM-0
MANGANESE-0
POTASSIUM-1
BORON-12
SILICON-10
SODIUM-3
CALCIUM-2755
MAGNESIUM-12
PHOSPHORUS-1579
ZINC-1044
BARIUM-0
Water%-0
cSt Viscosity @ 100°C-10.47
SUS Viscosity @ 210°F-60.9
Flashpoint in °F-4.45
Fuel %-0
Antifreeze %-0
Insolubles %-0.5
TBN-11.5
MPT UOA
The fine folks at MPT sent me some replacement oil to try it again at a lesser interval, they believe the UOA was affected by some type of fuel additive (I don't think I even used any). I still don't see how the TBN would be so low.
Blackstone Comments:
Thanks for the notes. We found some lead in this sample, so we ran it twice and it was still there,
so that could account for a bit of what was found in your Sentra's sample. Silicon is an antifoaming additive
and it's harmless in that form. There were some unusual additive levels in this oil. Note zinc. It read lower
than phosphorus, while in most oils it's the other way around. We also found a lot of molybdenum (antiwear
additive) and that could be why insolubles read high; it's probably just additive falling out of suspension. The
TBN was strong at 11.5, since 1.0 is low.
ALUMINUM-1
CHROMIUM-0
IRON-1
COPPER-1
LEAD-3
TIN-0
MOLYBDENUM-943
NICKEL-0
SILVER-0
TITANIUM-0
MANGANESE-0
POTASSIUM-1
BORON-12
SILICON-10
SODIUM-3
CALCIUM-2755
MAGNESIUM-12
PHOSPHORUS-1579
ZINC-1044
BARIUM-0
Water%-0
cSt Viscosity @ 100°C-10.47
SUS Viscosity @ 210°F-60.9
Flashpoint in °F-4.45
Fuel %-0
Antifreeze %-0
Insolubles %-0.5
TBN-11.5
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