Had doubts about the veracity of this due to the can being open already at the beginning, but per Snopes it's plausible. Basically brake cleaner is an organic solvent while Monster has a high level of acidity - they can both clean things, but would be useful on completely different types of grime.

Looks like the perfect colonoscopy prep too!

I wonder if there is a 1 - 2 punch of brake cleaner, then Monster drink?

There are tons of things brake cleaner won't clean. That's why it's called BRAKE cleaner and not all purpose cleaner.

I usually just sort of use whatever is to hand. Butane, rubbing alcohol, gasoline, carb cleaner, but these are all pretty flammable and/or toxic (WD-40 is good for some things, but then *that* is hard to clean off). If Monster works, that sounds good. So, like, does Doctor Pepper or Coke work too? I don't care for Monster, but I can drink the rest of the Doctor Pepper. Mountain Dew if I have to.

Mountain Dew would be the best choice of the three - it's the citric acid in Monster that is doing the job here, and neither Coke or Dr Pepper would have that (while Dew has orange as an ingredient). I would think something like 7-Up or Sprite would also be fine, though I'm not sure how much citrus those actually contain. Lemonade?

But...sugar

It's what brakes crave.