For one...the tabs are best placed into the lower hose, but the number of tabs has nothing to do with your temperature problem unless you plugged the upper hose with tabs or blocked the thermostat.luc1 said:I just dropped 6 GM coolant tabs in my upper rad hose, now the temperture goes up on every red light and higher temperture than before, what's going on?
Ahh, that was missing in your first post. The new thermostat may be bad. Maybe only partially opening. That would cause overheating if it isn't opening correctly.luc1 said:Coolant was topped off after the tabs were dropped and the thermostat was also changed a few weeks ago.