This suggestion would mean more if it came from
@High Performance Lubricants instead of me, as I am just a hack, but I would consider trying the NoVII EURO 10w30 for shts &giggles…since money wasn’t mentioned as a constraint. It might last longer (more viscosity headroom against fuel dilution). But Dave would know more about compatibility of the Euro’s add pack vs your ethanol brew…I’m just looking at viscosity and your climate there in S Cal. If your goal was to reduce fuel dilution, it would be interesting to try E10 for an OCI…if you could show your face after the decreased performance. But maybe try that AFTER you decided on an oil…so you don’t confuse oil-type vs gas-type for any possible improvement. Of course, how you drove that particular OCI, climate, how you sampled, and Oil Analysers attitude the day of the test could have a bigger effect on the FD reading than which oil.
By the way, I’m glad I live 1000 miles away from you, as I’m not the best user of a rear view mirror.