My 90 300e has been running a little warmer than normal lately. I've read many other posts regarding the same subject. My situation is odd because the top radiator hose will actually suck together. I have replaced the following items: Top radiator hose, Thermostat(twice), Engine cooling Fan(not Aux Fan) just to name a few. Does anyone have any ideas on why this radiator hose would suck together? Any comments are greatly appreciated.