Hello Guys
 I have a 85 vanagon gl. I had my coolant light go on with the needle reaching the top line. I see no leaks. Coolant bottle in van was empty.
 I bought vw coolant and filled it to max I had the same thing happen for a minute or so then it went out. Could this be that the coolant was circulating in the engine...causing the light to come on again. No problems since.
Thanks for any in sight
Tina