Headlight Jets

[masekwm]

MOT time, I don't think they work, but our Octavia would just randomly spray them and then go weeks without a squirt.

Do they always work, is there a magic to them? Do they not work for a while and then work? How can I test them?

 

[masekwm]

Who knew you had to have the headlights on?!

 

[flebay]

Who knew you had to have the headlights on?!

me