Hello All, The Coolant level/temp warning light and audible warning went off yesterday in my Mk3 Toledo. The engine was not over-heating but when I checked the level in the expansion tank, it was well below the "minimum mark". I topped it up with coolant to about 1mm below the "max" mark. When I first drove the car after doing this, I only got about 0.5 kms before I got the warning again. I pulled in, checked the level and it was back down well below the "min" mark again. I drove straight home parked it. A couple of hours later I checked the level again and it was still below the "min" mark but this time I noticed that when I removed the the expansion tank cap to top it up again. The level immediately rose back up to just below the "max" mark. Does anyone know if this is normal and if so, how are you supposed to gauge how much coolant to put in?