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[mathewst]

Seems the mig is loosing coolant slightly and it comes from coolant bottle tap.
It is possible but unlikely that I caused this (put some coolant mix, the heating was at max, car was around working temp but this I'm not 100% sure)
Was plannig to give the rad a flush but still didn't do it since the place to do it is the problem.
The story is like this.
After longer runs and especially after uphill driving it happened that coolant was driping frum underneath the coolant bottle tap (like it overboiled slightly.
The car once reached a temp on gauge of around 102 degrees, this was after uphill full throtle driving though.
The reason why I'm worried is after I bought the car last winter running temp was never over 93,94 degrees  and now it goes from 92 to 98 regularly and I do tend to drive carefully.
The temp when it reaches 97-98 and car is left idling does not rise
Previous owner said he replaced the waterpump and thermostat together with the belt (have no reason not to trust him since belt seems new and everything else he said turned out to be true).
One more reason why I'm little worried is that I'm taking the mig the day after tomorrow for an  oil change and aircon refill.
I'm not using aircon now since it is out of gas and I know that runig with aircon on will raise the temp even more
Worth mentioning that there is no oil in coolant and it is bloody hot here (38 degrees Celsius in the shade).

Do I have a possible problem?
Do I need to replace the coolant bottle tap (or the whole bottle  )
Anything else that can be the problem?

[TheBoy]

I've had this before on my old TD

Is the top hose rock hard?

[mathewst]

Sorry ThBoy on which top hoe do you mean (the small one that goes to coolant bottlee)?

[Omegatoy]

think you will find a couple of quick oil changes will help the cooling,oil carries away the heat from the internals, people with 2.5td do not realise the MAXIMUM, mileage between changes should be 4.5k miles or 6k kilometers, the piston cooling jets are very very small and block easily!! if its regularly gone over on oil change intervals, then the engine internals will be blocked and it will have to be flushed using a strong oil flush, trouble is when it gets this far it can blow the hg as the cooling system is trying to do both jobs!

[mathewst]

A little update to the story.
Changed the coolant bottle tap and now the temp never climbed over 95 (still didn't give the car a blast uphill but the temp did drop)
Didn't thought the tap can do the obvious difference