BMC air filter - which side is the dirty side?
firstly, i apologize for the noobish question...i am by no means even an amateur gearhead.
to make a long story short, this is my first time using a reusable air filter, i decided to wash it and give it a lube, i failed to remember which side was the dirty side that i would need to spray the lube on. i kind of have an idea, however, i think it would be wise to get some verification. rather not have any further headaches.