Here is the test of redline 10w40. Will post back graphs etc. later when I have time. TAN is higher than expected but iron, which increased starting with the extra long oil run (for this engine I mean) went down a lot which is good. All comments welcome. Thanks.
Also FYI most redline oil TANs start around 2.5 or so. The TBN likely got a small boost because I added about 3/4 of a quart pretty late in the run.
Also FYI most redline oil TANs start around 2.5 or so. The TBN likely got a small boost because I added about 3/4 of a quart pretty late in the run.