evan631- IME Meguiar`s QDs do have a limited shelf-life, although it`s pretty long, almost indefinite under climate-controlled conditions (much shorter if very hot/cold).
My Klasse twins sure weren`t new when we moved into this place in 2000 and they`re still fine. Even if/when KAIO gets "nasty black globs that might be mold or somesuch" (and I mean really nasty-looking! This is my *really* old jug of it) it still works 100% fine IME, just used some of that nasty stuff.
If you`re OK with not doing correction, I`d just go over it with the KAIO. Four-six layers of KSG would still be fine, but I`ve switched to FK1000P as my LSP as it provides the same level of protection/durability while looking nicer and shedding dirt better without the need for so much layering. Downside is that you can`t use it on trim/etc. the way you can with KSG.
But unless you really want to get this done and behind you, maybe consider just waiting until the Dealership stuff really needs redone.
And I`ll second the advice to *not* be leery of using a polisher. From my then-elderly father to my female BFF with zero experience with/interest in/knowledge of Detailing, nobody I know who gave it proper thought has ever had any problems with one. As the old saying goes, "it`s just a fast hand that doesn`t get fatigued". Use the right unit, with the right pads/products, and if it`s not literally idiot-proof, well...who cares, I assume you`re not an idiot
EDIT: OH, and yeah...using a QD, or a RinselessWash, or a SprayWax as a Drying Aid is great! I do something along those lines at virtually every wash. As long as the products are compatible (dunno about that Meg`s QD) it oughta work great, just be sure to really LAUNDER the Drying MF to get that stuff out of it.
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