My second UOA. My first is here. Still using Castrol Syntec (old formula, not the newer 'reformulated' Edge w/ Syntec) because I got a good deal on it.
The car was new to me at 70,400 mi and I started this oil at 72,200 mi. Since my last UOA I have changed jobs and while I told Blackstone my driving is 50/50, its is more than likely closer to 60 or 70% city driving now.
Oil filter is 'stock' Toyota filter (larger capacity that is intended for the 2ZZ engine).
03/20/12 Comments:The 6,000 miles that you ran this time produced very little change in the way of wear metals and hat's exactly what you want to see since things looked so good last time. As before, the low wear in this sample shows an engine that is wearing exactly as it should. The 50/50 city and highway driving didn't hurt anything that we can see. The trace of fuel returned. That might be from time spent in city traffic, but it's not harmful and isn't a problem. The TBN was 2.1 showing some active additive left. 7,000 or 8,000 miles on the next oil should work just fine.
Code:
OIL SAME CASTROL SYNTEC 5W30
MILES IN USE 6000 MI 5200 MI
MILES 83400 MI 77400 MI
SAMPLE TAKEN 03/20/12 10/18/11
ALUMINUM 4 3
CHROMIUM 1 1
IRON 8 6
COPPER 2 3
LEAD 0 0
TIN 3 2
MOLYBDENUM 78 86
NICKEL 1 1
MANGANESE 0 0
SILVER 0 0
TITANIUM 0 0
POTASSIUM 1 1
BORON 23 24
SILICON 10 13
SODIUM 30 47
CALCIUM 2746 2768
MAGNESIUM 26 16
PHOSPHORUS 616 683
ZINC 740 833
BARIUM 1 0
SUS VISC 210 60.0 56.9 56-63
CST VISC 100 10.22 9.32 9.1-11.3
FLASHPOINT 365 365 >365
FUEL% TR TR
ANTIFREEZE% 0 0 0.0
WATER% 0 0
INSOLUABLES% 0.3 0.5
TBN 2.1 2.6 >1.0
*should be
The insolubles are lower this time with even more miles, and silicone also dropped. Personally, considering this UOA has more miles in harsher conditions (city driving) I'm even more happy with these results than the first OA. I'm not sure that I will try 7k or 8k unless any of you think it's a good idea to run much longer with the TBN getting that low? Any input is appreciated!
The car was new to me at 70,400 mi and I started this oil at 72,200 mi. Since my last UOA I have changed jobs and while I told Blackstone my driving is 50/50, its is more than likely closer to 60 or 70% city driving now.
Oil filter is 'stock' Toyota filter (larger capacity that is intended for the 2ZZ engine).
03/20/12 Comments:The 6,000 miles that you ran this time produced very little change in the way of wear metals and hat's exactly what you want to see since things looked so good last time. As before, the low wear in this sample shows an engine that is wearing exactly as it should. The 50/50 city and highway driving didn't hurt anything that we can see. The trace of fuel returned. That might be from time spent in city traffic, but it's not harmful and isn't a problem. The TBN was 2.1 showing some active additive left. 7,000 or 8,000 miles on the next oil should work just fine.
Code:
OIL SAME CASTROL SYNTEC 5W30
MILES IN USE 6000 MI 5200 MI
MILES 83400 MI 77400 MI
SAMPLE TAKEN 03/20/12 10/18/11
ALUMINUM 4 3
CHROMIUM 1 1
IRON 8 6
COPPER 2 3
LEAD 0 0
TIN 3 2
MOLYBDENUM 78 86
NICKEL 1 1
MANGANESE 0 0
SILVER 0 0
TITANIUM 0 0
POTASSIUM 1 1
BORON 23 24
SILICON 10 13
SODIUM 30 47
CALCIUM 2746 2768
MAGNESIUM 26 16
PHOSPHORUS 616 683
ZINC 740 833
BARIUM 1 0
SUS VISC 210 60.0 56.9 56-63
CST VISC 100 10.22 9.32 9.1-11.3
FLASHPOINT 365 365 >365
FUEL% TR TR
ANTIFREEZE% 0 0 0.0
WATER% 0 0
INSOLUABLES% 0.3 0.5
TBN 2.1 2.6 >1.0
*should be
The insolubles are lower this time with even more miles, and silicone also dropped. Personally, considering this UOA has more miles in harsher conditions (city driving) I'm even more happy with these results than the first OA. I'm not sure that I will try 7k or 8k unless any of you think it's a good idea to run much longer with the TBN getting that low? Any input is appreciated!
