As I was dropping my girlfriend off for work and I came home, I accidentally pulled up a bit too far on the curb and then I notice a large leak of coolant, car buzzed low coolant afterwards. The undercarriage looks fine to my eye. Coolant was bubbling out of the coolant reservoir. A friend told me my plastic rad is going, and is it finally time? Car is fully stock at the moment. What other areas should I check? Should I just refill the coolant and see what happens? Engine is on 112k miles with a good service record held up by previous owner and me for the past year. 87 NA base. Sorry if this has been asked before but it literally only started leaking after I hit the curb, but I don't see any damage on the underside.

 

Use a coolant pressure test kit to identify any coolant leaks. It replaces the radiator cap and pressurized the cooling system while the car is off, and you’ll see and/or hear any leaks. The coolant pressure test kit is a rental tool at most USA autopart stores.


they also sell a uv dye you can add to the coolant. Then can go in with a uv light to identify where the newly leaked uv dye has come from.