Refreshing Radiator Overflow Tank

[jharmon]

Greetings,

I've searched past posts and haven't seen an answer to this question.

My overflow tank has yellowed over the years and I'd like to clean it up. Has anyone found a technique for cleaning the inside and outside of the tank?

Thank you.

[sblake01]

I don't know. I used Lime Away and a bottle brush on the inside. It looked much better when it was done but I don't think you can ever make them look 'new'.