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Ford coolant tank shenanigans... #5233952 10/08/19 02:38 PM
Joined: Apr 2017
Posts: 609
28oz Offline OP
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Posts: 609
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. 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?". duh

Anyways.............here's to hoping I finally got a good one!


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1990 Nissan 300zx VG30DE - M1 EP 10W-30
2004 Nissan Quest VQ35DE - M1 EP 10W-30
2003 Ford Excursion 7.3 PSD - Rotella T6 5W-40
2005 Ford Taurus 3.0 Vulcan - QS HM 5W-30
Re: Ford coolant tank shenanigans... [Re: 28oz] #5234024 10/08/19 03:56 PM
Joined: Jun 2005
Posts: 14,391
bdcardinal Offline
Offline
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Posts: 14,391
Yes there was a bad batch of the 7.3L coolant tanks. I have a stack of 6 or 7 that went bad with just one customer. I forget if they finally got a good one from us or if they got the Mishimoto one to correct the issue to begin with.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Ford coolant tank shenanigans... [Re: 28oz] #5234120 10/08/19 06:02 PM
Joined: Jun 2005
Posts: 14,391
bdcardinal Offline
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Posts: 14,391


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Ford coolant tank shenanigans... [Re: 28oz] #5234181 10/08/19 06:44 PM
Joined: Oct 2004
Posts: 10,357
B
bullwinkle Offline
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Joined: Oct 2004
Posts: 10,357
Wow, a $300 degas bottle? That would buy a lot of JB Weld! At least this one is a lot cheaper-
https://www.ebay.com/i/272997858930?chn=ps


06 Ram 3500 CTD 4X4(FG Venturi), 89 F-450 7.3, 98 XJ 4.0(XG8A), 05 xB(XG3600), 18 Transit 3.7 (MC), 03 Merc Grand Marquis 4.6 2V(XG2), 11 Express 3500 6.0 (Fram PH10060 for now)
Re: Ford coolant tank shenanigans... [Re: 28oz] #5234678 10/09/19 09:14 AM
Joined: Apr 2017
Posts: 609
28oz Offline OP
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Posts: 609
Yeah, the metal ones are certainly an option. The Mishimoto one, though expensive, at least has a sight glass! Hopefully, I finally got a good tank from the dealer, but we shall see.....


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1990 Nissan 300zx VG30DE - M1 EP 10W-30
2004 Nissan Quest VQ35DE - M1 EP 10W-30
2003 Ford Excursion 7.3 PSD - Rotella T6 5W-40
2005 Ford Taurus 3.0 Vulcan - QS HM 5W-30
Re: Ford coolant tank shenanigans... [Re: 28oz] #5234983 10/09/19 02:40 PM
Joined: Mar 2006
Posts: 9,614
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dailydriver Offline
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HA! Expensive??

The Pro Alloy one I want to get to replace my plastic factory bottle when (NOT if!) it cracks makes the Mishi version (for MY car at least) seem downright bargain basement cost! LOL


2016 Ford Fiesta ST 17K miles
Ravenol REP 5W-30
Fram XG3600 filter
Ravenol MTF-2 in the IB6 transaxle
Re: Ford coolant tank shenanigans... [Re: 28oz] #5240153 10/15/19 11:49 AM
Joined: Apr 2017
Posts: 609
28oz Offline OP
OP Offline
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Another bad one. The seam in the tank started gushing after a 30 mile drive yesterday. Seriously, this is ridiculous! Who is making these for Ford?


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1990 Nissan 300zx VG30DE - M1 EP 10W-30
2004 Nissan Quest VQ35DE - M1 EP 10W-30
2003 Ford Excursion 7.3 PSD - Rotella T6 5W-40
2005 Ford Taurus 3.0 Vulcan - QS HM 5W-30
Re: Ford coolant tank shenanigans... [Re: 28oz] #5240157 10/15/19 11:54 AM
Joined: Dec 2005
Posts: 14,219
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kschachn Online Content
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Can you post some pictures of these failures?


1994 BMW 530i, 252K
1996 Honda Accord, 288K
1999 Toyota Sienna, 434K
2000 Toyota ECHO, 284K
Re: Ford coolant tank shenanigans... [Re: 28oz] #5240192 10/15/19 12:39 PM
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Posts: 609
28oz Offline OP
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Posts: 609
Right above my finger you can see the seam. That's where it's leaking. The exact position isn't always the same, but the leak is always in the seam. The cap is OEM and a couple months old. The leak is almost always a steady stream until the coolant level gets below the seam. Here's a screen grab I snapped from a video of it.

[Linked Image]


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1990 Nissan 300zx VG30DE - M1 EP 10W-30
2004 Nissan Quest VQ35DE - M1 EP 10W-30
2003 Ford Excursion 7.3 PSD - Rotella T6 5W-40
2005 Ford Taurus 3.0 Vulcan - QS HM 5W-30
Re: Ford coolant tank shenanigans... [Re: 28oz] #5240198 10/15/19 12:47 PM
Joined: Jun 2005
Posts: 14,391
bdcardinal Offline
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Yup, that is where the stack of bad ones I have leaked.


2014 Ford Mustang GT Track Pack
1995 Ford Mustang GT

Ford/Mazda Parts Counter
NRA Benefactor Member
Opinions expressed are my own.
Re: Ford coolant tank shenanigans... [Re: 28oz] #5252909 10/29/19 10:20 AM
Joined: Apr 2017
Posts: 609
28oz Offline OP
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Posts: 609
I went with the Mishimoto. Once I got over the sticker shock and the sharp stabbing pain in my wallet, it really is a very, very nice looking piece. After going through at least 4-5 plastic tanks since June , I just couldn't justify the time/hassle factor anymore, not to mention the risk of overheating the engine.


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1990 Nissan 300zx VG30DE - M1 EP 10W-30
2004 Nissan Quest VQ35DE - M1 EP 10W-30
2003 Ford Excursion 7.3 PSD - Rotella T6 5W-40
2005 Ford Taurus 3.0 Vulcan - QS HM 5W-30
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