They have been recommending ND20 in them for 40 plus years. It can be hard to find so a lot of people use ND30. I've never seen or heard anyone say to use type F in a V1.
Although I've never replaced a clutch, I think it's just dealing with a gasket for the cover, the pads, and possibly springs. You would also need the correct puller. Many of them are already 40 to 45 years old, so don't expect them to last forever no matter what you put in the clutch bath.
It also will depend on your application. For example, is the bike stock, or kitted? Are you riding on level ground or hills? Are you exceeding the weight limit for the bike? I know I weigh 50 to 75 pounds more now than if did 40 years ago when I got my first V1 bike, and a lot of these bikes' max out at 320 to 340 pounds, and the bikes themselves weigh around 120, so we probably shouldn't weigh more than 220 ourselves.
I wouldn't try anything different than ND20 or ND30.
Rural King has gallon jugs of ND20 for around $25 and the bikes take about 20 ounces, so a gallon should take care of 8 oil changes.