andyl - Member
...can either make assumptions....
Calm down dear, maybe I just misunderstood you eh?
Where did I say they used a different quality? I said spec - ie specification and viscosity.
What I am saying as that different applications have different requirements for fluid properties. A citroen (I have worked on them when I was a kid) has big components and big pipes and is actuated by mechanical pumps. A bike brake has tiny calipers and tiny pipes and is activated by one or two fingers and needs to provide good feedback. Hence why Shimanos engineers, who know a lot more about what they are doing than you or I, would choose an oil with the properties they have
Fair enough, but lets not be so niaive as to assume Shimano wouldn't prefer you to but their product to put your money in their pocket rather than someone elses.
It works for me, and others. So what? Live and let live....