Silicon spray is good to clean your bike faster;
If your riding a dirty and wet track the soil is all over your bike, then you go home and clean your bike,its a
dirty job but someone`s got to do it!
Next time you go for a"bad" track, spray some silicon oil for example on your lowest frametube, bottombracket and brake section (NOT on brakepads and rims, just in case....
)
The most silicon sprays are not extreme waterrepellent, so if you going to clean your dirty bike the soil washes away easily.
The point is that the dirt stitches on the layer of silicon instead of your frame.
It costs you a fortune to buy so much silicon spray,but i`ve discovered a B-brand for 1 Euro (about 4 us dollar)/bottle, that's a real bargain!
Mark b.