Does ProGold have a shelf life?

Thanks guys! And of course, BUMMER. It does have a shelf life, and even if I take an optimistic interpretation of "conservative ratings" of 2-3 years, 5 years is too old.

How fun for me to redo all of that.

Sometimes this hobby can be annoying.

OK, so the CAIG products are guaranteed for 1 year & they have a shelf-life for 2-3 years.
So, what if you use an expired product that has been kept under the manuf recommended storage conditions?
IMHO the efficacy of the product is reduced. That just means you need to use more of the product to achieve the desired results. It's not like the expired product (assumption: product kept under the manuf recommended storage conditions) has broken down & is totally useless. I find that hard to believe.
IMHO, Dgaylin, you might be over-fretting -
Your connectors are shiny & clean but spraying older Pro Gold just means that your connectors will not remain shiny & clean for as long as a newer Pro Gold would allow.

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.

Ok, Swanny76109, it's now your word versus mine!
You say that I have not done a chemical analysis so I'm hand-waving.
I say that neither have you & so you cannot confirm whether the chemicals have or have not broken down.

Sure, the chemists would disagree with me - they are chemists & they are trying to be exact. Plus, if they are Caig chemists they a$$ is on the line if they do not take the conservative route & say that after the shelf life the product is pure garbage. (BTW, this tack also helps their sales!).

This is a simple matter that, I feel, does NOT need an argument!
Let's say that the chemical did breakdown. So what?
I say that it will still clean but NOT as effectively. Now, it's up to the owner to either throw away the bottle OR buy a new one.
If you do not believe this rational (& you are free to disagree) then I believe that the onus is on you to prove otherwise. If I'm wrong I'm willing to change my stance.

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!