Very old bottle of DP 4in1 Rinse less Wash still safe to use?

[critical_level2]

Around 2-3 years ago, I bought a gallon bottle of DP 4-in-1 rinseless wash. Over the last 2 years due to work, moving to a new house, etc., it got put on a shelf and hasn't been touched. It doesn't matter to me if I have to buy a new bottle, but I would rather not waste the old one if it is still safely usable. Would it still be okay to safely use it on my new truck after sitting for a few years or would it be better just to toss it in the trash and buy a new bottle of it? Is there a certain shelf life to the rinse less washes?

All help is appreciated.

[FUNX650]

If it doesn't stink to high heaven, or have some strange-appearing floaties in it...

-You could mix-up a DP 4'n'1 QD solution (@ 1:16) and give it a go.


Warning!!

-A MF towel may be harmed during this process. If so:
-Check with your local municipality's ordinances for proper disposal.

:)

Bob