limescale removal

[The Pits]

this recent weather has caused dribblings deep down to the basement of the car park where I keep my beloved Elise. It's dripped basically calcified water all over the back of it, leaving a stubborn white limescale residue. A wash and polish won't shift it. I was thinking Calgon or similar might?

any experience of this or similar?

if so how did you get it off?

any help much appreciated before i plaster my car with something that might make it a lot worse!

[The Pits]

many thanks, I was eyeing some cheapo brand of limescale remover in Lidl yesterday, I reckon that would have taken the stripped the 'midnight blue pearlescent' off in seconds!

the only reason I mentioned calgon is that I thought it used a chemical reaction to dissolve the calcium (ie shouldn't affect the paint) as opposed to the Lidl stuff that was basically just acid! Looks like wishful thinking!

cheers

[The Pits]

Many thanks to all who helped. White wine vinegar when applied to a car washing brush did the trick. Pride an joy is now back to her best. In fact it looked so good after a good wash that I felt the need to take it out and get it dirty again!
You have no idea of the relief of seeing that crud come off!