Confused about what? I replaced thermostat cuz i temp gauge would drop to 0 and fans would come on. Replaced ECT and problem came back. Everyone said replace thermostat and that would fix it, so thats what i did.
Lookin at vacuum fill kit from Harbor Freight https://www.harborfreight.com/cooli...MI9drjr5j2iwMVoWFHAR3Orzc5EAQYASABEgJLu_D_BwE
....but it says you hook it to radiator cap....So how would that work on mine?
You'd do it on the surge tank. I think they're a waste of money for these systems.