Latest UOA. 5speed 07 corolla, filter was the purolator L14477 (larger white can, not pureOne blue). I left the filter on since it only had 5k miles on it. Last filter was on for 10K and did fine.
This was the second run in a row of YB 5w30. Filled the crankcase with the same. Now that I have this UOA, I can't really justify buying a more expensive oil and will just keep using the old yellow bottle and L14477. I don't do a lot of highway driving, and many trips are short. The oil stayed honey colored on the dip stick for the first 3k miles. It was dark when I drained it, but with a TBN of 2.9 I could have probably taken it out to 7500. I will start a new job in Jan. in which I hope to drive less. I am hoping to get my oil changes down to twice a year at 5k OCIs.
Blackstone comments:
The viscosity of this sample read a little low but no fuel dilution was present. Last time we
speculated about the low vis showing some fuel in the oil, as we didn't have enough sample to test if for fuel
dilution. No harmful contaminants were found here and the low viscosity is still present, though it doesn't
seem to be a problem. Wear looks great and we see no signs of a problem developing. It looks like your
Corolla has matured past break-in and is wearing very nicely. The TBN read 2.9, which shows that some
active additive was left. Looks good here.
OIL---------------YB5/30---YB5/30---PP5/20---PP5/20---?5/30
MI/HR on Oil------5001-----4814-----5531-----4910-----3920
MI/HR on Unit-----25223----20222----15398----9867-----4957
Sample Date-------11/16/08-7/28/08--3/20/08--11/3/07--7/5/07
Make up Oil-------0--------0--------0--------0--------0
ALUMINUM----------1--------2--------3--------3--------3
CHROMIUM----------0--------0--------1--------0--------0
IRON--------------3--------5--------9--------8--------9
COPPER------------1--------1--------3--------11-------31
LEAD--------------1--------0--------2--------2--------1
TIN---------------1--------0--------0--------1--------4
MOLY--------------1--------8--------61-------53-------115
NICKEL------------0--------0--------0--------0--------0
MANGANESE---------0--------1--------1--------1--------1
SILVER------------0--------0--------0--------0--------0
TITANIUM----------0--------0--------0--------0--------0
POTASSIUM---------0--------3--------0--------1--------4
BORON-------------60-------68-------34-------24-------40
SILICON-----------6--------11-------15-------18-------53
SODIUM------------2--------4--------8--------32-------248
CALCIUM-----------1629-----2172-----2983-----2556-----1436
MAGNESIUM---------6--------10-------21-------16-------8
PHOSPHORUS--------536------684------710------664------585
ZINC--------------662------844------876------777------736
BARIUM------------0--------0--------0--------0--------2
SUS VISC. @ 210F--54.5-----53.2-----52.2-----52.5-----52.7
cST VISC. @ 100C--8.62-----8.24-----7.93-----8.03-----8.10
FLASHPOINT F------375------Short----390------385------385
FUEL %------------ ANTIFREEZE %------0.0------0.0------0.0------?-------0.0
WATER-------------0.0------0.0------0.0------0.0-----0.0
INSOLUBLES--------0.3------0.3------0.2------0.1-----0.2
TBN---------------2.9------1.7------3.2------4.3-----2.9
This was the second run in a row of YB 5w30. Filled the crankcase with the same. Now that I have this UOA, I can't really justify buying a more expensive oil and will just keep using the old yellow bottle and L14477. I don't do a lot of highway driving, and many trips are short. The oil stayed honey colored on the dip stick for the first 3k miles. It was dark when I drained it, but with a TBN of 2.9 I could have probably taken it out to 7500. I will start a new job in Jan. in which I hope to drive less. I am hoping to get my oil changes down to twice a year at 5k OCIs.
Blackstone comments:
The viscosity of this sample read a little low but no fuel dilution was present. Last time we
speculated about the low vis showing some fuel in the oil, as we didn't have enough sample to test if for fuel
dilution. No harmful contaminants were found here and the low viscosity is still present, though it doesn't
seem to be a problem. Wear looks great and we see no signs of a problem developing. It looks like your
Corolla has matured past break-in and is wearing very nicely. The TBN read 2.9, which shows that some
active additive was left. Looks good here.
OIL---------------YB5/30---YB5/30---PP5/20---PP5/20---?5/30
MI/HR on Oil------5001-----4814-----5531-----4910-----3920
MI/HR on Unit-----25223----20222----15398----9867-----4957
Sample Date-------11/16/08-7/28/08--3/20/08--11/3/07--7/5/07
Make up Oil-------0--------0--------0--------0--------0
ALUMINUM----------1--------2--------3--------3--------3
CHROMIUM----------0--------0--------1--------0--------0
IRON--------------3--------5--------9--------8--------9
COPPER------------1--------1--------3--------11-------31
LEAD--------------1--------0--------2--------2--------1
TIN---------------1--------0--------0--------1--------4
MOLY--------------1--------8--------61-------53-------115
NICKEL------------0--------0--------0--------0--------0
MANGANESE---------0--------1--------1--------1--------1
SILVER------------0--------0--------0--------0--------0
TITANIUM----------0--------0--------0--------0--------0
POTASSIUM---------0--------3--------0--------1--------4
BORON-------------60-------68-------34-------24-------40
SILICON-----------6--------11-------15-------18-------53
SODIUM------------2--------4--------8--------32-------248
CALCIUM-----------1629-----2172-----2983-----2556-----1436
MAGNESIUM---------6--------10-------21-------16-------8
PHOSPHORUS--------536------684------710------664------585
ZINC--------------662------844------876------777------736
BARIUM------------0--------0--------0--------0--------2
SUS VISC. @ 210F--54.5-----53.2-----52.2-----52.5-----52.7
cST VISC. @ 100C--8.62-----8.24-----7.93-----8.03-----8.10
FLASHPOINT F------375------Short----390------385------385
FUEL %------------ ANTIFREEZE %------0.0------0.0------0.0------?-------0.0
WATER-------------0.0------0.0------0.0------0.0-----0.0
INSOLUBLES--------0.3------0.3------0.2------0.1-----0.2
TBN---------------2.9------1.7------3.2------4.3-----2.9