Does ProGold have a shelf life?

Some analogies come to mind: I throw my food away when the freshness date has expired. I throw my prescription meds away too. My used paint in the garage usually starts to get funky and mucky after a couple years sitting in the can. I also change my oil every 5000 miles since the oil breaks down and doesn't protect my engine as well and I want my car to go for 200,000 miles or so if I can get away with it. But, that is me. Not looking for an argument by any means, but I still say everything has a shelf life. I think the majority of rational people would agree with me here but you can agree to disagree, that's what the forum is for. Cheers!

why not check with the manufacturer, CAIG, right? This is a chemical/formulation/shelf life issue and they should know. Let us know what they say!

Bombay, the chemists would probably disagree with your read on this. How can you say the chemical components have not broken down and become useless? That is pure conjecture. Everything has a shelf life.

One thing that got missed here too: the original poster was concerned about the time it took him to do the work. If I spent a bunch of time cleaning my equipment like he did and realized the product I was using might not be as effective, I'd be bummed too because my time would be worth so much more than the value of the chemical here. It's like when you choose a 20 year paint or a paint without a warranty. Why not spend a bit more on the quality item and do the job right and be confident the paint won't be peeling away in 5 years?