| There is a thinner oil for use in cold weather. I think it is a different colour from the normal blue oil.
I normally have mine set to about 4. This means the reservoir will last for over 1000 miles per fill. I also carry a small bottle of extra oil so I can fill it up while away on our longer trips.
I turn mine up if the weather is pants as the rain and road spray washes most of the oil off the chain... | 
Hybrid Mode
