I'm trying to think of other product types beyond hifi audio where snake oil is so prevalent.
Car air filters. K&N in particular keep bees & boulders out, but don't do any significant filtering. They even come with magic oil (might be snake).
That said, the high-end SubZero combo fridges have entirely separate compressors for the fridge and the freezer, which seems like a good thing.
Ah, but those compressors are the same production stuff any fridge gets, and Sub Zero have other issues, like on my pair (separate fridge and freeze), the backs rusted out because of a poor design that allowed the coolant piping to freeze outside. I haven't found that to be a problem on any of the big brands.
Isn't that the area that the term 'snake oil' got it's genesis?
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