Oil grades for royal enfield electra 5s

After going through various manuals,feedback by fellow riders and experiments myself, here are the grades that I am using in Royal Enfield Electra 5s (CI 2008  model)

1. Engine oil : 20W50   2.25 Litres  [Castrol GTX or valvoline . Both are equally good.] The truth is iron barrel bullet can do with any 20W50 oil . Go whichever you find economical.
2. Clutch Oil : 10W30  500 ml [Available as Hero Honda service centers "Brown" container for Splendour model it is Bharat Petrolium made or you can visit Honda service centre for 10W30 oil]

Update 25-APR-2013 : Since summers are here I and find 10W30 too thin for summers in Delhi . I am using same 20W50 for clutch as well and it is giving good results. 10W30 is good  for winters. 

3. Gear Oil : 90 Grade 450 ml [Castrol or MICO]
4. Front forks : Company says 10W30 but mechanics here use thicker oils because it is too thin after few years of operations of forks. Mechanic said "30-40 no. ka mobil daalte hain hum to " .

Frequency : I change Engine and clutch oil on every service (2500 kms or 4 months whichever is earlier). Gear oil I change on every alternate service.

Note : Few mechanic use the same 20W50 in clutch as well but this is very bad practice, 20W50 is very heavy and contains friction busters that causes clutch plates to stick together . With 20W50 I could feel low pickup. Had to get the clutch plates cleaned with sand paper after 1000kms only.

UPDATE: I have come across various forums and found that people recommend  ~900 ml 10W30 in clutch to avoid sprag clutch failure in self start models. I have added 800 ml as of now and its doing good..