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Aluminum Degas Bottle Upgrade Worth it?

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25K views 13 replies 7 participants last post by  ZMANN  
#1 ·
Hey everyone-after a few weeks of owning my studded 2006 F250 I tried to loosen my degas cap only to find it stuck. It will move only an 1/8 of an inch. I called Power Stroke Enginuities and they were perplexed, said I might have to cut it off.

My question is, are the aluminum degas bottles(I am looking at the Mishimoto MMRT-F2D-03) worth the extra cost over a motorcraft plastic OEM version? Are there really any functional or performance advantages?

Thanks in advance.
 
#2 ·
Not really sure about the advantages, some of the guys run them and may chime in. I just went with a new Motorcraft degas bottle. Pretty cheap at $100 or so. My old one was fine at 10 years and 100K miles (just discolored) so it was an easy decision for me. I also like the visibility of the clear bottle over a tiny window. YMMV.
 
#4 ·
I have one in the garage just waiting to install. I've had the plastic Ford bottle fail (crack) on me twice. The other advantage of the Mishimoto piece is that it has a port for a pressure gauge, which I definitely plan to utilize.

It was worth it for me.
 
#6 ·
As mentioned, shop around.
I would probably get one, if mine was bad. Nothing like forced upgrades.

Sent from my SAMSUNG-SM-G930A using Tapatalk
 
#7 ·
Appreciate the responses, I saw sinister diesel's aluminum degas bottle($449) as well and was just curious what the most popular choices were. Bullet Proof Diesel has the OEM degas bottle at $130 before shipping along with Amazon/Rock Auto offering non-motorcraft/OEM versions($40).

I assume everyone would agree the least expensive option worth buying would be the Motorcraft product from BDP versus a generic brand? I still really like the mishimoto but just trying to figure out what the norm is.

Thanks,
 
#10 ·
I did a little research before going with the Mishimoto. They actually put a lot of R&D into this particular piece, and it has all the necessary baffles, where some of the cheaper units out there are just an open tank. I also talked with my long-time and highly trusted mechanic, who has seen tons of cracked plastic Ford bottles, obviously. He has put in several aluminum ones recently (many customer-provided), and he believes most of them to be junk next to the Mishimoto. If there is a better option at a similar or better price point, or even a far superior option for more, I haven't found it.
 
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#12 ·
I've read and heard that the baffles served more of a purpose, but I'm not an engineer, so I'm not clear on the details. I can't see why the plastic one would really need them for support.

I do remember them asking for suggestions somewhere during the early design stages, maybe it was here. I remember someone suggesting the pressure gauge port, which they did implement, so that seems like a good move. I missed what other suggestions they were given but didn't apply, but again, I'm not even sure where I saw that anymore. It was quite a while back.
 
#13 · (Edited)
we asked for a real sight glass, not a plastic tube and fittings
we were told we were out voted by fans of plastic plastic https://www.powerstroke.org/forum/g...sion/1070130-more-durable-degas-mishimoto-s-6-0l-aluminum-degas-bottle-r-d.html
also asked for a standard cap option but that did not happen

you can’t see why a plastic bottle would need structural support to keep it from expanding like a ballon and cracking? Aluminum has enough rigidity it can handle 16+psi without deforming ( i test them
all the time :)

the baffles could be argued as keeping the fluid from sloshing around but there is no problems associated with fluid movement in this application

you will notice most if not all metal overflow tanks don’t incorporate baffles the Moroso unit does not have them and they have been making bottles and catch cans for decades