Whipple uses S&B filters in their kits but you can use cleaning and re-oil kits from S&B, K&N, Airaid, etc, they are all essentially the same. We have a couple of kits from Airaid to make the filter either red or blue.
Once the filter is dry just spray it pleat by pleat for even coverage, don't over coat it then when done stand it up on end and let the excess oil drip off.