I think I have the same problem with my 2005 T & C, except only with one tire. I don't know that I have aluminum wheels, but I suspect that one has become corroded so that every 3 weeks or so it drops down to about 28 psi and the light comes on. So I am VERY INTERESTED in knowing what this "Slime" is so I can solve my problem too. What is it and how do you apply it?