Shelf life on compounds & polishes ?

[a_guerrajr]

I have some Menzerna stuff along with random products... XMT, Adams, Pinnacle ....

I haven't popped the bottles open in about 2 years. Is this product even good any more?



I recall reading that when it underwent too much change in temperatures, it altered the properties of the product and made it perform differently.

 

[Dan]

The key is if it has separated and you can't shake it back to its original consistency. I've had stuff that is over 10 years old that is fine, other stuff has gone bad in less than a year.