Pink crust near radiator hoses

Ello poppets,


I think I already know the answer to this however this is my first encounter so figured I'd ask the pros

I've noticed a bit of pink residue forming around my thermostat hosing, and it seems to trail down some of the engine block (I noticed a massive build up next to my oil filter). I last did an oil change 3 months ago and none of this pinky-crust was there at the time so it must be recent

To my knowledge, this crust forms as the coolant dries up. Does this indicate that the hose may be "loosening" from heat expansion,etc. and thus is causing a minor but evidently messy leak? As far as I'm aware, these are the OEM coolant hoses so I wouldn't be surprised if they're nearing the end of their service life

First image is from underneath the car, next to oil filter
Second image is the top of the thermostat housing/coolant hose that comes off it

Depending how often and how much you're topping up the coolant will determine the urgency.
Also keep an eye on the dip stick for any "milk" on it, that would force an engine out, which ultimately is likely the solution to your leak. If you can get by until say, the next timing belt change, then there are lots of refresh jobs made more simple with the engine out.