Well, I’m an idiot. Added coolant this morning and forgot to replace the cap. On the drive to work, I heard something fall off the car but didn’t think anything of it. Warmed up the car for 15 minutes after work, then went to the grocery store, and finally filled up the gas tank when I spotted this under the bonnet when I went to check my oil. Well, crap. If anyone spots a metal radiator cap on the side of Rotunda, let me know…
