1Z Air Conditioner Treatment - ?

I've done some searches but can't see to find an immediate answer. I am looking to pick up the 1Z air conditioner treatment spray foam. However, I am not certain if the entire bottle is used on just one vehicle or if only a portion is needed. I've got 3 cars that I'd like to use it on and just wanted to verify the amount needed. Thanks in advance!

 

Ive gotten away with half a can per car.

 

I've done half on some and the whole bottle on others and from my experience, half is enough.

 

As long as no one has thrown anchovies down the vent, half should suffice.:giggle:

 

I used the full bottle on my personal car.

 

i have a bottle sitting in my collection, no one has asked for the service and mine doesn't quite need it yet.

for those who have used it, do you like it?

 

I like it....works really good.