Now that you mention it i was told that the engineer must have filed my report away by mistake and that it would be posted to me. Still no report after a week, all they gave me was the bill listing oil filter, washer fluid, clean air filter, engine flush and labour, £310 pounds and they also fixed an oil leak on the front of the engine and did the 5th injector and ECU nice chaps. I always thought that the coolant was pumped around the engine to keep it cool and if the level was low the fluid would become much hotter faster as there was not enough volume of fluid to do the job that the correct level of coolant would. Also on the off chance that anyone would know what is the minimum thickness that the brake disks should be replaced as mine are very worn but was told that they were fine and would like to check them myself.