Results are in for Shell Rotella Gas Truck 0W-20 in a 2013 Honda Civic (1.8L, non-turbo)
From this earlier post I was looking for High Ca/High Moly oil:https://www.bobistheoilguy.com/forums/ubbthreads.php/topics/5250127/1
I arrived at Shell Rotella Gas/Truck. It was also on rebate.
Results are about in-line with prior results on Idemitsu Eco Moly.
TBN was quite a bit lower, but that did not affect wear metals. Probably couldn't go much longer, but I wouldn't want to go more than 8-8.5K mi anyway between oil changes.
I was spiking the Eco moly with a little ZDDP, so z/p were elevated intentionally. May do that on this current interval.
I used the Shell Rotella again, so will have another data point to report in another 6 months.
Any comments? This is a decently controlled experiment, so let me know if there are other suggestions.
Fortunately or unfortunately this engine is pretty robust so may be difficult for anything to look significantly better/worse.