thanks listers!!!!! I will be with cap one way or t'other tomorrow. 

jen 🐰
Good words to you. 📝
Make every stroke count! 🎾

> On Jan 9, 2018, at 18:39, Dan N <dn92610@GMAIL.COM> wrote:
> 
> no that tank is NOT pressurized, it's an overflow tank. The 2-way blue cap
> dumps some coolant in it when the pressure exceeds the limit and it sucks
> the coolant back in when the pressure went under the limit. It's OK to
> drive long distance without the cap but keep an eye on it every time you
> have chance.