Ugh, tell me about it. Those bonders are pure hype for fine hair. Honestly, Olaplex is still my go-to. It's not magic, but it does way more than that overpriced wand ever did.

Got a 2004 Volvo with a coolant loss that only showed up on cold starts. Same deal, everyone swore it was the water pump weep hole. Cap off, pressure pump, nothing. Finally left it in the alignment bay overnight, came back at 5am and saw a tiny drip on the passenger side engine mount bracket. Turned out the lower radiator hose clamp was stripped and it only slipped when the engine shrank after sitting cold. Took me two days and a lot of bad words. A cold engine and a flashlight beats any scan tool for hard leaks. The trick that worked for me was to clean the whole area with brake cleaner, put some baby powder around the suspect spots, then let it sit. The powder turns dark where oil or coolant seeps in, even if you can't see the drip itself. Made a hairline crack in a dry manifold stand out like a sore thumb.