I left my CRC Throttle Body cleaner and MAF cleaner in the garage for 2 winters. My garage isn't heated but is connected to the house (so it's a bit warmer than a separate unit). I live in Minneapolis, MN so it does get cold here in the winter. Do you think the product is still good to use or should I just scrap them and get 2 new bottles (they are both over 1/2 full so I would like to use them but not if they are bad).


Thanks in advance,


Jason

 

If they still spray then use them.

When they get old the propellant pressure drops. You can bring them in the house for a while to warm them up and increase the pressure inside the cans.