also keep it in a ZipLock bag, i like to get all the air out of it while i am closing the bag and then place a rubber band around the plastic bag/head of the motor, this way what ever after run drips out of the front bearing it stays in the bag and not all over or where you will keep the engine and no air will get to it also.
Tornado Racing Fuel and Product
XRAY RX8,ZAC OS SPEED XZR
XRAY X12,Muchmoore Fleta
Hudy, HEI international