Originally Posted by wemay
Originally Posted by dnewton3
Break in wear still coming down.
Looks good; trending well.
Regardless of the intent (of which you and I may disagree) of the injection strategy, the end result is less fuel dilution overall. This and other UOAs on these "new" 2nd gen EBs shows the engines are receiving less raw fuel in the crankcase. Whereas I contend that the dilution has never been as horrific as some panic-stricken folks would claim, the reality of having less dilution can only be described as desirable.
Motor on!
Agree,
We've seen multiple "high dilution UOA" and rarely if ever have i noticed elevated metals.
Disagree with fuel dilution and elevated wear metals. We should be looking at wear rates. I posted results of 500 BlackStone samples. For GDI engines in this large sample, I4 2.4L Ecotec engine, when fuel dilution exceeded 3%, wear rates increased significantly. Twice the wear rate of the same non-GDI engine. My own engine wear rate doubles and my viscosity drops by a full cSt in less than 1500 miles when exceeding 3%.
The second sample by the OP shows lower accumulated wear metals as expected. It should be much lower than that if they conducted a Full Volume OIl Change (FVOC). Anywhere from 10-20% of the old oil remains in the engine, along with wear metals, combustion by-products, sludge, etc after a typical drain and refill.