I was using this oil in our newly acquired Tacoma V6; but haven't been able to locate more either. I don't care to use an oil that becomes almost impossible to find.
So, I switched the truck to Castrol GTX - we'll see how it does on a couple OCI's. I really liked how clean the GC remained in that engine even after 4k miles though, and the engine didn't use a drop of it.
I mainly wanted the GC, because of it being a pure synthetic, and we were gonna try and go with 7-8k OCI's within a truck primarily driven for construction purposes; i.e. sand, dirt, mud, etc
For now, we'll go back to 4k oci's, maybe stretch to 5k depending on what the UOA says.
But, I've always ran my vehicles on dino oil many many of them going well beyond 100k miles without issue, so no biggy. Just keep the oil changed at a decent interval.