First of all, I'm a full-time locksmith so I've tried a lot of coolants and this is my favorite. It sticks to the instrument and does not come off. You need to apply very little to lubricate the tool adequately. 2 cons 1 if you work in cold conditions this fluid is not for you if your shop is not air conditioned it will not move 2 it is more difficult to clean than the original faucet magic but not much if the brake cleaner and that Towel they occupy Well besides this great product I expect this bottle to last a long time.