Hi, I have a Mk 7 GTi, 3 years old but with a De Walt VW dealer warranty as bought from a main dealer in August. It had 13k miles when i bought it, 18k now, inspection service due in 4k miles.
Yesterday I got a low coolant level warning, came off the motorway. the coolant level was below min. I (carefully!) undid the top, pressure was released and the coolant level climbed to about minimum.
Several hours later after parking I checked when cold, the level was just at the bottom of the expansion tank. I filled it to between min and max (about 0.6 l).
Today at work, parking with the engine hot, the coolant was still midway between min/max. Two hours later, engine cold, the level is very slightly lower (but not much surprisingly) so sill about half way between min/max.
If the level continues to drop slowly, what sort of things could be the cause? I know there are discussions about water pumps leaking on here? I can't see any leaks, but I'm not sure where to look.
Luckily it is under warranty, but any thoughts or advice would be welcomed.
