newbie

[chuck43]

i everyone.

My passat estate tdi 100 is using water.

I put around 500ml in on Tuesday last week and light came on again yesterday (Monday night) so added another 500ml ish to take it to max line.

As evenings are dark, and weekend time im limited I haven't been able to take the engine cover off yet, but I've got in with a torch and cant see or haven't spotted a blatant leak. Getting worried head gasket?? Any ideas?
And if i do need to replace head gasket, is there a walk through anywhere?

Cheers

Chuck