K11 Expansion Tank Cap - Missing!

[morgan]

Just looked today and the little yellow cap for my expansion tank has gone!
Is it safe to drive without one?
Where can I find a replacement?

Thanks!

 

[skymera]

Just looked today and the little yellow cap for my expansion tank has gone!
Is it safe to drive without one?
Where can I find a replacement?

Thanks!

It's fine

The expansion tank itself isn't pressurised and has a small opening near the cap so the rad can suck coolant back in if it needs. It's an overflow thing.

I took mine out altogether

 

[morgan]

It's fine

The expansion tank itself isn't pressurised and has a small opening near the cap so the rad can suck coolant back in if it needs. It's an overflow thing.

I took mine out altogether

Thanks for that, skymera! That's great news!