Per my previous post about a coolant tank for my 7.3 PSD HERE, thought I'd give an update. I couldn't make up my mind about buying an OEM tank or a Dorman, so didn't buy either. In June, we took a camping trip where the original one finally developed a small split in small town Wyoming. Found an Autozone, bought a Dorman tank and swapped it out in their parking lot. About a month later, I discovered the cap was loose with dried remnants of coolant on the tank. I tried 3 different caps (OEM, Dorman, and whatever O'Reilly's had) and none of them would cinch down. They would click, click, pop, and come right off the threads. Bought an OEM tank from a dealer on Amazon and took the Dorman tank back to Autozone for a full refund. The OEM one lasted a couple months (truck gets driven pretty infrequently) before I noticed seepage along the seam. Online dealer said the warranty was good at any Ford dealer, so I took it in and did a warranty exchange. Parts guy told me to ONLY use Ford coolant as "anything else would eat it up". LOL. Well, that replacement leaked worse than the other one after a few weeks. Of course, the seam popped over the weekend in nowhere Wyoming hauling a camp trailer. Only thing I could do was try and seal it up with some plastic epoxy. Sealed it up enough to get home. Took the tank back in and they referred me to a different dealer because they didn't have one in stock. The other dealer's parts guy pointed to another coolant tank on his floor and said, "I wonder if there was a bad batch of these?". Anyways.............here's to hoping I finally got a good one!