Want going to post it, since it seems to be the norm, after 17+yrs with original, but finally had to give her a new reservoir. She was pissing faintly about 3in up from bottom. Shoe goo and duct tape lasted a few days until I couldn't take it no more. Hit Autozoo and 65 bones later,(last night) she's holding down her fluid...now, here's the kicker, lol. I THOUGHT, the OEM cap would be better suited to run, but keep the aftermarket in the glove box. Whatta idea that was! This morning, drove 80 miles one way to start doing the Xmas light installs, I hit Walmart to top the bottle off. Low and behold, wouldn't you know it, that damn bottle puked the OEM cap off and was sitting next to the battery, with NO fluid lost...yeah, I installed the other cap

 

 

Well, these days none of the bottles seem to be any good. My OEM Ford Motorcraft degas bottle I bought a couple of months ago is already leaking at the seam on the front by the hold down tab. I went and bought a Dorman yesterday.

 

That does make me feel a little better. I didn't want to spend the $85 extra for the own overflow bottle so I went Dorman. Quality was great, and your experience make me happy about me choice. Sorry to hear about your tank. It should be under warranty correct? I thought Motorcraft parts came with a 2 year warranty?

 

Are Dorman and Motorcraft bottles both Chinese now?

 

I went through this as well about a month or 2 ago now. I found the OEM bottle on Amazon relatively cheap, but the reviews gave me reservations on it as well as the Dorman. I was recommended the Napa one with a lifetime warranty. No issues with the cap or bottle thus far. No where on the box was a brand name, but on the bottle itself does appear what resembles the Dorman logo. Time will tell, but I was not about to pay $400 for those aluminum ones.

 

When in doubt, Clay usually gets my money. I've been satisfied with his Ford degas bottle so far.

 

A follow-up to this old thread for those considering a Dorman:

Three years ago I bought the Dorman bottle. Cap never fit right (was about .025" difference in thread diameter, loose cap). Since I live at about sea level, the lack of system pressurization was never a factor, even here in the HOT summers of LaLaLand. Thermostat at 192, and boiling point at 212, there was plenty of headroom for a cooling system of this size to prevent boil-over.

Fast forward to a couple of months ago on I-70 at the top of the summit just west of Green River, Utah, at 7900 feet altitude. Boiling point up there is about 195 degrees F. Pushed the engine to get to the top with the travel trailer, and got the cooling system into volcano mode. Virtually all the coolant lost on the asphalt at the lookout point up there. Fortunately, we have plenty of on-board water in the trailer, so I was able to get it cooled down and on our way downhill. I bought a "slightly" tighter-fitting cap at NAPA in Green River, which did help somewhat. We also detoured off of I-70 (I did NOT want to use the Eisenhower Tunnels at 12,000 feet in a pressure-compromised condition), and went up to I-80. This took us up over the Sherman Summit west of Cheyenne, Wyoming (8600 ft), even higher than Utah. I didn't push the engine hard climbing up, and everything "held".

Now, I needed to get the tap water out of the engine. I bought LOTs of distilled water, four gallons of Final Charge (EC-1 rated) at NAPA, and changed the coolant while in Minnesota.

The rest of our six-week trip to the Midwest and back, including Lake Tahoe, was uneventful, radiator-wise, but I decided "never again"!

Last week I called Clay, and the OEM Ford degas bottle arrived here in ASAP time! Thanks, Clay!

My caps, the old Ford, the NAPA, and a new Standt, all fit much better on this bottle, and will actually tighten to the ratchet point without "stripping" the plastic threads.

Now, to find that pesky small oil leak!

Pop

 

 

Clay told me on the phone that there had been some seam issues, but he believed them to be no longer a factor.

How long ago was your purchase?

Pop

 

 

I went straight to 1st unread so not sure if i updated either but, i remember installing the bottle and its maiden voyage from O.C. to beaumont(60+ miles), nothing but the 91e to 10e freeway at 5:30am doing 75mph to meet up with buddy to do installs. While waiting for him in Walmart parking lot, something in my little cranium said to check resivoir. Popped hood and what you know, nocap! Damn thing was bed rid'n next to p/s battery. Not sure why i did, but HAD the oem cap with me in pas side door. Installed it, left dorman cap in parking lot trashcan and so far, knock on wood, everything been bee-you- tee-ful...