Globs wrote:20/50 is a multigrade oil, i.e. not as slippery as synthetic.The Bern wrote:happy enough using Castrol GTX 20/50
The exact lessening of grip on a wet clutch will depend upon model, usage and oil, it's not a black and white science.
The 750 sounds lovely however, can we see a pic?
Yep, but back in the 70's synthetic were unknown
Or the clutch could have been designed to work with multigrade oil (T140V spec was ... 20/50)
Soz, no pic's of my own bike, but was US spec (peanut tank &'harley bars') same as below ...