Hello thanks for letting me into the forums a lot of helpful info but I am having a bit of a problem I have replaced the thermostat and the water pump and the radiator properly burped the system but I can bleed it then drive it for like three days then it overheats again it will heat up to about three quarters of the way at lower RPMS then when I get up to about 4 or 5 thousand RPMS it will go back down to normal temp any tips or suggestions thanks so much