My 2007 Cayman S sees quite a bit of track-time at Mid-Ohio Sports Car Course. I typically run in the advanced or intermediate run group, so the car is driven pretty hard. This OCI saw 4,100 total miles, with about 500 of those miles being driven on the track.
I stretched the OCI to three total track events (six days) this year, and wanted to see if that changed anything in the sample. I had another UOA of the same oil performed about a year ago 2010 Mobil 5w50 UOA
The other purpose of this UOA was to try and determine whether it would be possible to take this sample, now sheared (or, conditioned
) to a 5w40 and use it in my BMW 525i wagon with the 2.5L M54 motor. UOA is below:
Blackstone comments: WE wouldn't suggest putting this fill of used Mobil 1 5w50 in place in your BMW, only because this oil already contains near avearage amounts of wear metals for an M54. You might be able to get a couple thousand miles out of this oil in your BMW safely, so you can give it a shot if you're so inclined. THere's no way of knowing how wear will behave until you try it out and send in a sample. The TBN of this oil was still very strong at 8.7. Your Cayman looks good at 37,764 miles
AL = 6
CHROMIUM = 1
IRON = 11
COPPER = 9
LEAD = 1
TIN = 4
MOLY = 82
BORON = 167
SILICON = 5
SODIUM = 7
CALCIUM = 2919
MAG = 17
PHOS = 847
ZINC = 986
kV @ 100C = 14.41 cSt
Flashpoint = 400F
Fuel = TBN = 8.7
I'm very happy with these results, and filled the car with M1 5w50 for another OCI.
Comments are welcome!
Thanks,
Matt
I stretched the OCI to three total track events (six days) this year, and wanted to see if that changed anything in the sample. I had another UOA of the same oil performed about a year ago 2010 Mobil 5w50 UOA
The other purpose of this UOA was to try and determine whether it would be possible to take this sample, now sheared (or, conditioned
Blackstone comments: WE wouldn't suggest putting this fill of used Mobil 1 5w50 in place in your BMW, only because this oil already contains near avearage amounts of wear metals for an M54. You might be able to get a couple thousand miles out of this oil in your BMW safely, so you can give it a shot if you're so inclined. THere's no way of knowing how wear will behave until you try it out and send in a sample. The TBN of this oil was still very strong at 8.7. Your Cayman looks good at 37,764 miles
AL = 6
CHROMIUM = 1
IRON = 11
COPPER = 9
LEAD = 1
TIN = 4
MOLY = 82
BORON = 167
SILICON = 5
SODIUM = 7
CALCIUM = 2919
MAG = 17
PHOS = 847
ZINC = 986
kV @ 100C = 14.41 cSt
Flashpoint = 400F
Fuel = TBN = 8.7
I'm very happy with these results, and filled the car with M1 5w50 for another OCI.
Comments are welcome!
Thanks,
Matt