yea i no this is wot's stumped me i've put 3 stats on now so i can't see it being this, but i haven't had the stat in the pan to actually check it, but i mean after 3 stat's surely they all couldn't be wrong, and i've even changed supplier from QH to ford, and it's been flushed already i always do a complete flush with my cars when i buy them so the coolant is pretty clean, i'm sure it's been flushed twice, i no it's had a few changes of coolant aswell, and yea i'm already on a 50/50 mix, see there is something that is just not right.