Please feel free to correct my understanding, but I think fuel dilution is a parameter typically monitored to show non-oil related issues with the engine, not a measure of how good an oil is.
https://www.spectrosci.com/resource...re/e-guides/guide-to-measuring-fuel-dilution/
This tells me you had fuel leaking into the block (a lot), as it would be odd for any oil to smell like fuel within 20 mi of driving after an oil change, unless there are some other serious issues.
As an example, given an engine that leaks fuel into the crank case, by whatever means, it's not like one type of oil will make that problem go away, while another will make it worse, right?
I've used T6 5w40 and other oils in my rotaries, which I know leak fuel into the crankcase (by design, or lack of being able to design this out) esp on cold starts and low rpm, and the oil only starts smelling like fuel after 1000 mi or so. And that's not a problem I could solve by changing oils, it's one that was part of how the engine operated. In a piston engine, fuel washing the cylinders so much it ends up in the crank case after 20 miles and smells up the oil doesn't seem like an oil problem.
I just went and smelled my dipstick as i'm 1,000mi away from a 3k oil change while using Rotella T6. I don't smell fuel at all. I can send that oil in for a change when I drain it.
Also, take a look at the UOA I posted above, the "universal average" for calcium there is much higher at 2,284 (not 1,818 as in jdab's analysis) and the guy only had 968 measured. I heard Rotella has changed the formula, but BITOG says it's not the formula, it's the qualification that's changed.
