The phenomenon certainly does exist; higher wear comes at the front end of an OCI. But to be very clear about this, we're NOT talking about massive detrimental wear escalation after the OCI. The shift is typically, it's about 1ppm higher or so. However, it's not associated with changing brands as you indicate. It's simply changing oil that causes the uptick in wear rate; the brand and base stock are not precipitator of the wear increase.
- Discussed here in detail:
Reviewing UOA Data Used oil analyses (UOAs) are tools. And like most tools, they can either be properly used or misused, depending upon the application, the user, the surrounding conditions, etc.= There are already many good articles and publications in existence that tell us how to interpret...
bobistheoilguy.com
- Also as noted, here:
Engine oils are subjected to a series of industry standard engine dynamometer tests to measure their wear protection capability, sludge and varnish formation tendencies, and fuel efficiency among several other performance attributes before they are approved for use in customer engines. However, thes
www.sae.org
I have 20k+ UOAs in my database (literally; so many that I've lost count). The data proves with no shadow of doubt that there is a slight uptick of wear after an OCI.