I want to do a oil change in the spring, when I can ride again, and I would like to use Mobil 1 oil. The question I have is what kind of mobil 1 should I use there is a 10w40 and one for v-twins which is 20w50.
Buy the very best oil you can afford. Honda usualy recommend SAE 10w/30.
SAE 10W/40 is a little thicker but still good to use.
A good brand fully synthetic is my choice. Everyone has their own favourites.
Since the bike is water cooled, it helps the oil last longer. I have great success with the Castrol Synthetic 10w-40 for motorcycle. When I used mobile 1 & royal purple in my air cooled, it would burn up within 700 miles. IMHO.