Hey guys! The other day, I was cruising on the highway after a spirited drive through some twisties near me, probably going about 80ish mph with the AC on. Suddenly, I saw the coolant temp gauge shoot up by two bars at once. I immediately keyed the car off, and coasted to the side of the road to let it cool down in fear of blowing a head gasket. I've been monitoring my cars temperatures lately, and it seems like it's usually around 195-217 depending on how hot it is, although some days it's sat around 230-235 while cruising on the highway. The only mods I have done to the car are a warm air intake and scotts belly pan. My suspicion about why that temp spike happened is my radiator. It's the original one on the car, and it has nearly 360k miles on it. Most of the fins on the upper part of the radiator that's visible are gone, and i'm assuming this is affecting the cooling capabilities of the radiator. As a safety measure, I've ordered a new radiator and will be installing it soon. There's also a fear in the back of my mind that when I recently got the thermostat replaced (about 4 months ago) that Autozone provided me the wrong part. I ordered it in store, had them search for thermostats for my Insight and they had it shipped to the store. Is it possible that could be the issue? Here's a link to the thermostat that was ordered, it says stock temperature. I'll be replacing the radiator probably some time this weekend, and i'll report back here if anything strange happens or if the car runs cooler with the new radiator, fingers crossed!