I took my 2008 Prius (120K miles) to my most often-used mechanic today to get the engine coolant replaced. After looking the vehicle over and getting set to perform the service, they notified me of a coolant leak around one of the hoses - and told me I would probably need a new radiator. The tech showed me where the leak was (wasn't able to upload a pic for some reason) and said he didn't want to change the coolant when it would need to be changed by default if the radiator was replaced. He also told me the coolant looked pretty good anyway, so not to worry about not having it changed today. I was surprised to hear about the leak, as I have never seen any coolant puddles in the garage and haven't ever noticed anything when I've changed the oil. I also had this vehicle taken in for a recent multi-point inspection/trip check to a different place, where they combed it for any issues, and they didn't notice. Nonetheless, upon showing me the spot - the tech pointed out that there had been some hardened pink residue around the house (pictured) and that he had scraped some of it away - but some was still visible. My question: Is this a no-brainer to replace the radiator? If there are some visible signs of coolant leakage on this hose, is there a good chance the radiator may be ready to go out? I really don't want to break down somewhere, but also don't want to spend nearly $1K unnecessarily.