chill in the refrigerator until ready to use. we target whatever is available at that time. traveling to and from work meetings across town in comfort, privacy, and class. if you are not confident enough to do the given procedure by yourself, then you should take your vehicle to a mechanic (this is actually a better idea). unfortunately you would need to provide a lot more details than that to receive any sort of helpful response. mo-up 14 days fast shipping!! instead, i decided to save up enough to be able to survive for about 18 months. 