heater output problem
My heat output is great for the first month or 2 after I flush, then it starts getting weaker down to just luke warm..
Ive flushed 4 times, once using one of those rad cleaners.. Good flow threw the heater core..
I did use the prestone and not zerex.. I think there would be more posts and problems about this if that was it?
Temps are fine, warms up ok, never overheats. Sitting at a red light, 95 degreee weather, never went over 210..
Tried a new thermostat, I really dont think its the water pump, because temps are fine, but the heat does improve if I get the rpms up. Im confused, help!