Think this may have been asked before, but as ever either I'm lousy at coming up with the right search criteria, or the Search function isnt working properly again.

So my expansion tank levels, usually sits about 1cm below the min mark, filling it up to the max mark, works until I use it and then after one drive out that gets the engine up to temp the level is back to 1cm below min again.
It never seems to actually go empty, or at least I havnt seen it do that.

The reason for the query now is, that during these last few days of high temps, the car is running a LOT hotter. Yes I know its supposed to, but it is getting to these higher temps quicker than it used to e.g. last summer.

So any ideas ? Am I worrying about nothing ? or is there an issue there that isnt obvious ?

Mine is doing the same thing. I travel the same journey to and from work all week so I know when the temperature first shows and where it hits 86. In this weather it's been hitting 86 a lot faster and my cooland level has dropped a little below where it normally sits.

Either we both have the same problem or its NFN.

mine also sits just below the min level....