Quote:
Originally Posted by ME_Andy
Wow, that iron level is shockingly low. Mine was at 32 after 6500 miles (first oil change on the Cruze). Maybe that's explained by the fact that I have an iron block but yours is AL? But then I would expect to see more AL in your sample, and there isn't much more. Is this a full synthetic oil?
I'm curious. Does anybody else have other ideas? Maybe Chevys come a little tighter from the factory.
 |
Hmmm..... I thought that even the Aluminum blocks had steel cylinder liners? I believe my 2009 Toyota 1NZ-FE engine has the "spiney" type liners which twist lock into the Aluminum block. It would be or should be the steel liner which give account for a higher iron content during break in. The other difference is that Honda and Toyota both use a private patented micro-polishing process on liners, pistons, wrist pins, and cams and crank bearings, which GM does not use. I believe they have another process altogether.