The last time we saw our 2015+ F-150, it was still equipped with the plastic bag of dinner rolls that is the stock expansion tank. Since then, we've been busy designing, prototyping, and sampling a stronger and better-looking expansion tank for all 2015+ F-150s. Before we dive into our tank and the progress we've made, let's look back at the stock tank and some of its shortcomings.
The expansion tank equipped to the 2015+ F-150 is fine enough for the average driver who spends most of their time looking at the outside of the truck or sitting in the cabin. For the enthusiast who spends hours under the hood, however, it presents a few problems. The clear plastic construction makes it easy to see how much coolant is in the tank, but it's not particularly attractive. If you've spent hours of your time washing