Coolant overflow tank on 1999 F53 V10

I have the same chassis. I just replaced my tank last July. (although not OEM, the Dorman tank (I also bought) from Amazon is a perfect fit) It's time! You did the right thing. I've never had any long term success repairing coolant overflow tanks with anything except a new one. If you look at the old tank when you get it out, it probably has spider cracking all around the point where it eventually cracked/leaked. It only takes simple tools, 15 minutes, and about a gallon of coolant (50/50 mix) to replace the tank. It makes a little mess on the ground when you spill coolant, which you will. It's probably too late but it would be best if you could get the new tank shipped to some intermediate point along your route and replace it ASAP. Watch your temperature gage closely if you choose not to.

Chum lee