I just use Shell Rottella, it is available everywhere and has ZDP, also carries a SM API rating for gasoline engines. They just changed the formulation, but it still has ZDP, I emailed Shell.
Kind of a bummer: looks like they dumped the dual diesel/SM rating on the recent switch from CJ-4 to to CK-4. May be a case of..."if it doesn't meet the newer SN, then say nothing rather than appearing outdated" or "lets focus marketing on diesel", which is too bad.
I have some CJ-4/SM Rotella on hand right now, and agree it seems to be good stuff.
The newer product is probably still fine even though it lacks an official gasoline rating.
Pictures are down the thread a bit showing the lack of gas rating.
Doesn't make sense to me, but I'm not in that business......
Moparts doesn't like the link...copy and paste if interested.
https://bobistheoilguy.com/forums/ubbthreads.php/topics/4377748/Shell_Rotella_T5_10W-30_***API
