Help required
 

My scooby is playing up - 1999 uk 2000 tuned

started steaming from front end every now & again (just whisps) on very cold nights

checked coolant filler & reserve tank - i keep filling but after a run it seems to disappear?

i repeat fill but it just seems to vanish

there is no leaks & car doesnt over heat.

has nyone any ideas please?

probably a hair line crack in the end tank of the rad.

Simon