PIcture please. windshield washer foot pump reservoir

[tman]

Thx for the info, 72oz should do the job
From what I've read you need about 20% of this system capacity for expansion.

If you do run with this, use 5/16 overflow hose.  The nipple is a bit smaller than the radiator fitting.  If you use 3/8 hose, it will be too big for the nipple.  5/16 is a hair to big, but the clamp will stop any leaks.