Get some plumber's Teflon tape and wrap around the threads on the tank a couple times. It stopped my leak until the new cap came. I still use it with the new cap, the threads on the tank are still old. It's available at hardware and home improvement stores.

Steve
87 Syncro

Sent from my iPhone

> On Oct 28, 2015, at 4:01 PM, Stan Shapiro <mail@STANSHAPIRO.COM> wrote:
> 
> 
> 
> My blue coolant cap is leaking slightly. I have another cap on order it will take 2 days. Any suggestions on what I could do that temporize the leak while I'm waiting for the cap?
> Here's the sad part, after reading this board, about a month ago I ordered two new caps but they were delivered to my house a few days after I left on this trip.
> Stan
> 
> 
> Sent from my Verizon Wireless 4G LTE smartphone