Looking at a "Honda Oils, Fluids, and Chemicals Reference Guide," dated 2002, it specifies Honda Genuine Automatic Transmission Fluid ATF-Z1, Honda P/N 08200-9001. Here's what it says:
. Formulated for all Honda/Acura vehicles, including CVT transmissions.
. Optimum shift quality.
. High viscosity index fluid.
. Special anti-wear characteristics.
. Special additives protect seals and o-rings for prolonged service life.
My local Honda dealer tells me that ATF-Z1, for CVT applications, has been superceded by Honda Genuine Continuously Variable Transmission Fluid, Honda P/N 08200-9006.
Change the transmission fluid, after the car reaches normal operating temperature, on your Civic every 48,000 km or 2 years, whichever comes first.
Here are several other products worth checking out:
. Red Line Synthetic Oil - Automatic Transmission Fluids - H-Type CVT
. AmalieStore:: Wolf’s Head Universal Synthetic Automatic Transmission Fluid, Transmission Fluids, 836-92866-56
I prefer full-synthetic transmission fluids.
I believe CVT NS1 and CVT NS2 are fluids for Nissan CVT vehicles.