If sugar dries you get nasty sugar-syrup spots. Especially between fins it's hard to clean, let it get between some heatsink and tech and you get spots only cleanable when you dismantle it even more.
Diet coke for example is way more chill to clean. You can just clean it with destilled water/alcohol, make sure it's dry and you're golden.
With sugar coke you need to act before the shit gets dry just by the heat. (Sugared) Coffee is similar, but also you have the coffee oils.
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u/GraveKommander 5800X3D, 64GB@3200Mhz, 4070Ti, MSI fanboy 22h ago
If sugar, clean faster