I've got the oversized Ramair and buy the ramair cleaning kit which is a cleaner and oil (i did research if another cleaner would be ok but couldn't get a definitive answer). So you use all the cleaner and then a light misting of oil which means you end up with nearly a full bottle of oil left over, but you can't buy them separately so just end up with loads of oil left over each time, bit of a waste really.