Because of the cost, I followed John's lead and went back to Rotella and Mobile 1 in most of the vehicles.
I am still using it in the Landrover and the Bronco.
I had been getting a little oil loss using 10w40 so on the advice of the Land Rover experts, I switched to CI4+ 15w40 which is a Diesel/Marine blend.
That stopped the oil loss completely. I'm guessing it's because of the diesel additives.
It's still extra expensive in the LR because I still have to change it at 5,000 miles or less because the engines run so rich.
Hopefully, it will be cost effective in the long run.