How long are sealants and waxes usable after opening?

[The Chee]

I still have 1/3 of Z1 and Z2 which I bought Feb 2003, just wondering how long before those expired generally.

Thanks

[Boss_429]

circus1,

I believe I asked Sal this a while back. I think Sal said 3 years on the Z1, and 5 years on the Z2. Of course, that`s provided that they are kept in the right conditions.

You could always email him to be sure.