Looking for some feedback on this. It's been about a hundred years since I posted a UOA on here. Oil was in use for almost 9 months (1/11 - 10/11). This is the first OCI that I followed Toyota's 10k recommendation. Blackstone noted that copper and silicon are high. Note that averages I listed are from Blackstone, but for 5k OCI.
Comments from Blackstone: "Your engine is pretty new yet (and it looks like you've been running pretty long oil runs already), so
we're not too concerned about the elevated copper and readings that turned up here. Copper could just be
some residual wear-in stuff that hasn't washed out of the engine yet, and maybe silicon is from factory
sealers. Because other elements look fine, we doubt either element warrants any attention at this point.
Averages are based on 5,200 miles on the oil. The TBN of 1.8 shows some active additive left (1.0 is low).
Check back for improvements next time."
Code:
Miles on oil: 9,925 Miles on unit: 20,039 Sample date: 10/09/11 Make up oil: 0 qts Unit Averages Aluminum 5 3 Chromium 0 0 Iron 19 11 Copper 16 6 Lead 0 2 Tin 0 0 Moly 627 78 Nickel 1 0 Manganese 1 1 Silver 0 0 Titanium 0 1 Potassium 0 2 Boron 64 40 Silicon 34 16 Sodium 8 33 Calcium 2381 2252 Magnesium 10 76 Phosp 716 684 Zinc 852 817 Barium 0 0 SUS Visc @210F 53.9 cSt Visc @100C 8.45 Flashpoint 400 Fuel% <0.5 Antifreze% 0.0 Water% 0.0 Insolubles% 0.4 TBN 1.8
Last edited:
