i am excited to join this site as it has helped me get an insight of what could be wrong with my mini, hope you can help.
I have owned my mini cooper convertible for just over two months and i love it, when i first had it the car was fine, then the first weekend of owning the car, on the saturday, i checked the coolant as i had a previous mini i owned for a day, yes a day, and got my other car and money back as the head was going on it so i get paranoid.
i was amazed to see that the coolant had completely gone, once i got home i topped up the coolant and then since then the expansion tank has kept emptying, i took it back to the garage a few times under warranty and it has still been doing it, it had a new radiator as the other one apparently had a hole in and this was causing the problem.
It did the same thing but started bubbling. All of a sudden the expansion tank would be over full and bubble. Then it would either go to min or completely empty again.
I changed the cap on the expansion tank and that seemed to fix it, it was going to min then max when hot, then back to min when cool.
The coolant has bubbled a fair bit and i am wondering if there is air in the system, would you suggest i bleed it? or flush it and put in new coolant?
The car has never over heated and the temp gauge is sat in the middle all the time when its driven. The fan has never come on to cool the car and my oil is good.
it drove me up to cardiff and back on the weekend and it was fine, just the coolant bubbled on the way up, no coolant loss.
Then in the main part of the city it began bubbling alot during sitting in traffic, then it lost the coolant.
i am really worried if it is the head gasket or a major problem, please could someone suggest an idea of what it could possibly be.