it is night here. will do that tomorrow. I will let you know.
if the impeller is destroyed, should I see debris when I drain the coolant? now that I think of it, just a minute before seeing the gauge red, I heard tap tap tap tap tap during 10 seconds at 60 miles per hour then it disappear. I thought this must be the 'tappets' which I heard where sometimes making a sound on the M40. then the sound disappeared and I thought "I'm lucky". then again I never heard this sound before and never heard what the 'tappets' sound like.
anyways a minute after I saw the temp gauge lol. but i'm not sure when the gauge went up, because there is no bloody alarm. the light didn't even light up. does yours light up? *rant: there should be a sound alarm!!!