I use Mobil 1 15-50 syn in my convert.Mobil 1 75-90 syn gear oil
The bike is a 1976 Convert.
Been using Mobil 1 15-50 for the last 35 years. One bike was a MG 1972 Eldo with over 350000 miles . Bike is still on the road. I'm on Wild Goose under the name TOMB.
TOMB