I bought a new Royal Enfield Interceptor 650cc in 2020. I am an ex mechanic and have serviced the bike myself from new. I have multiple oil choices to choose from.
From new, I decided I would use the Motul 5100 4T 10W-50, Ester, Synthetic engine oil.
No complaints at all......great product. Nice smooth gearchanges, quiet transmission and a good quality oil in all respects.
Bought from Opie Oils every time. Great pricing, so excellent value for money.