I would imagine it's awesome stuff....rebadged of course but that takes nothing away from it. Some may argue that the engine needs to run a while on dino to wear in....some say why wait put it in and run it.

 

No, the wear rate shift is more pronounced at the front end of the OCIs. Typically at 3k miles you'll see higher wear rates (slightly, not offensively). The difference in wear rates between 5k miles and 7.5k miles is negligible; typically only a few tenths ppm/1k miles.

Read the "normalcy" article. There is all the proof you need in there to understand it.

Let's let at some examples of wear rates ... from the article, 4.6L mod Ford:
it will shed an average of "x" ppm of Fe every 1k miles ....
at 3k miles; the wear rate is 3.2ppm / 1k miles
at 5k miles; the wear rate is 2.5ppm / 1k miles
at 7k miles; the wear rate is still 2.5ppm / 1k miles
at 10k miles; the wear rate is 2.3ppm / 1k miles

As you can see, the wear rates go DOWN as the OCI gets longer. This is true in nearly every engine series made, all the way out to 15k miles. While there are always individual exceptions, the VAST majority of engines respond this way.

While some folks believe that changing oil more often reduces wear, the data totally proves this to be a false theory. The wear is slightly greater in shorter OCIs. It's not "terrible" at short intervals, but the proof is that it certainly is not any better; none whatsoever.

So to your question, the difference between 5k miles and 7.5k miles in terms of wear is negligible. You are neither helping or hurting your engine by choosing between those two distances for your oil changes. But you are hurting your wallet! Think about it ...

Truck A gets it's oil changed at 5k miles, and it drives 35k miles a year. That's 7 oil changes. And a wear rate of "X"ppm.

Truck B gets it's oil changed at 7k miles, and it drives that same 35k miles a year. That's 5 oil changes. And the same wear rate of "X" ppm.

Truck B uses 20% less oil. That's 20% less money spent. For the same damn wear rates. And while some folks would say "Well it's cheap insurance to change oil more often ..." that is the cry of the ignorant. Oil can typically go out to 15k miles safely in most circumstances, even in hard use in trucks. So changing oil frequently isn't "cheap insurance", its just plain waste.


Now, my examples are based on the 4.6L Ford. But if you read the "normalcy" article, you'll see this phenomenon is not the exception, but actually the rule! This is true nearly all the time! Longer OCIs make for lower wear rates. Typically the differences in wear rates at 5k miles, 10k miles and 15k miles is only varied by a few tenths of ppm. It is the short OCIs (3k miles or less) that actually result in higher wear rates.


As you asked, if you're supposed to OCI at 7.5k miles, and you choose to do it at 5k miles, are the engine wear rates going to go up? Maybe, maybe not. But even if it does it is minimal at that distance. However, the wear on your wallet is 1/3 more! You spend 33% more money at 5k miles than if you OCI at 7.5k miles. And for what? No better wear whatsoever.

Read the "normalcy" article and also SAE 2007-01-4133; all the proof you need is in those two places.

 

as for engine "Break-In" with today micro-polishing... break-in is within 100 miles..

its now the final gear drive.. (front and rear on 4x4)... gear wear/matching.

my opinion.

but a rebuild is still a few thousand...

as for oil change... once a year... 8-12k per year... in all my stuff..