Originally Posted by Fritzauf
Wrap the filters in newspaper for a day.
It's just a little extra, and will save your butt (MAF) if by chance you got a little too much oil on the filter. Also, if you aren't sure, spray a little "low pressure" air (reverse hose on shop vac or use a hair dryer) through the filter after oiling. If you don't get 'oil splatter' on clean news print, then you are good to go.