IAG air/oil separator

[Fabster]

I’m curious as to why this would be necessary. Shouldn’t the vehicle be equipped with one already? Does anyone have an air/oil separator installed and does it boost performance in anyway or is it an overpriced do nothing device?

https://iagoffroad.com/iag-air-oil-...FkWEPHel47cPYQXK7Ke3Dh95Ko6MGIjxoCcMIQAvD_BwE

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[IAG Off-Road]

Thanks for the questions. We’d be happy to share more info about the AOS. We’ve sold over 50,000 of these for previous applications with great results.

Like the name states, the device separates the oil from the air in the PCV and CCV systems. You don’t want this oil making it back into the intake to be burnt along with your fresh air, which can reduce performance and lead to detonation or even eventual engine failure.

Why doesn’t the factory put one in? We assume that it’s largely as a function of cost cutting. Most high performance turbocharged vehicles incorporate some type of AOS - Ford even makes one as an optional accessory. BMW And Porsche both use them, among others. If you’ve seen threads showing the contents of catch cans on these vehicles you’ll know that oil is absolutely still collecting in these lines and if not drained off is going into the intake.

The beauty of our AOS is that it’s maintenance free, meaning you don’t need to check and manually drain it like a catch can. Let us know if you have more questions! These units are pretty new for the Bronco market, but as I mentioned, they have been very successful in preventing engine damage in other vehicle applications.

 

[Ninjak]

I have an AIG. I was one of the early testers on this. It is truly worth it, as it is a hands-free system, much like the system on a GT500. Yes, the Bronco 2.7 had the port and direct, but that does not mean the system will not retain deposits and junk. This helps clean it out.

 

[JP2]

Can this be used in commiefornia?
carb numbers on it?

 

[IAG Off-Road]

Can this be used in commiefornia?
carb numbers on it?

We will eventually seek a CARB EO as we have done for other AOS models, but right now it's not.

 

[5GENIDN]

I installed a catch can (not IAG) and it actually caught a decent amount of oily mixture. But there was also some kind of vapor leak, which left an odor (I've got a bionic sense of smell). So I removed the assembly for now, and this spring will reinstall and try to identify the leak with soapy water or something. But overall, whatever was in the can, didn't make it back into the engine, which should be a good thing making it worthwhile.

Are you sure it was not just water in the oil of the catch can.... A typical catch can collects a lot of condensation on the inside of the can itself.... That is why the IAG "can" is heated with the motor coolant and then can return the oil to the motor with no condensation in it.

 

[mikec426]

I have one as well. Was sort of a tester to give them feedback on their installation instructions to make sure they worked. Took a lot of pictures and submitted a decent write-up, but have no idea if they used any of it or made any changes.

Anyway, on principle it made sense to me to not allow oil back into the intake. Figured it was a relatively small price to pay to help the engine last longer.

 

[5GENIDN]

Yes I think you are correct, the oily mixture in my catch can over first part of winter, consisted of water as well as oil. Problem for me was the vapor odor maybe coming from some connection. It should be a closed system, but I could smell the vapor, even a little while driving depending on the situation.

A little concerning seeing how the only "vapor" should be coming from the crank case.... which should be only oil and air at engine temperature.... And you are right... should be a closed system.

 

[Willub]

Thanks for the questions. We’d be happy to share more info about the AOS. We’ve sold over 50,000 of these for previous applications with great results.

Like the name states, the device separates the oil from the air in the PCV and CCV systems. You don’t want this oil making it back into the intake to be burnt along with your fresh air, which can reduce performance and lead to detonation or even eventual engine failure.

Why doesn’t the factory put one in? We assume that it’s largely as a function of cost cutting. Most high performance turbocharged vehicles incorporate some type of AOS - Ford even makes one as an optional accessory. BMW And Porsche both use them, among others. If you’ve seen threads showing the contents of catch cans on these vehicles you’ll know that oil is absolutely still collecting in these lines and if not drained off is going into the intake.

The beauty of our AOS is that it’s maintenance free, meaning you don’t need to check and manually drain it like a catch can. Let us know if you have more questions! These units are pretty new for the Bronco market, but as I mentioned, they have been very successful in preventing engine damage in other vehicle applications.

The 2.3 comes factory with an AOS.

 

[5GENIDN]

The 2.3 comes factory with an AOS.

Really? is this new for 2025?

Ford Performance sells one.

 

[AdamF@IAG]

Really? is this new for 2025?

Ford Performance sells one.

All modern engines have an 'AOS'. Some are more adequate than others.

 

[5GENIDN]

All modern engines have an 'AOS'. Some are more adequate than others.

Interesting that ford must recognize that and sell an additional one....

I like my IAG AOS... I check my line occasionally and I have not seen any condensation on any residuals. AND Ford obviously had a problem with the 2.7 (and now recognized with the 2.3??) evidenced by changing to a port AND direct injection to try and clean the back side of those valves.

 

[AdamF@IAG]

Interesting that ford must recognize that and sell an additional one....

I like my IAG AOS... I check my line occasionally and I have not seen any condensation on any residuals. AND Ford obviously had a problem with the 2.7 (and now recognized with the 2.3??) evidenced by changing to a port AND direct injection to try and clean the back side of those valves.

I feel pretty confident that Ford didn't add port injection to save you from deposits on your valves. Very likely it was due to emissions and/or fuel mileage. Seems to be the driver for most OE's nowadays. JMHO, your mileage may vary.

 

[5GENIDN]

I feel pretty confident that Ford didn't add port injection to save you from deposits on your valves. Very likely it was due to emissions and/or fuel mileage. Seems to be the driver for most OE's nowadays. JMHO, your mileage may vary.

Actually direct injection creates more power and better fuel milage than port injection. Period.

At the time Ford introduced the change to the 2.7 from 100% direct injection to the combination of direct and port they were having longevity/deposit issues with the valves on the 2.7. It is my assumption these were correlated.

It does make sense since Top Tier gasolines were agreed upon in the 90s between ASAE and the petroleum distributers to add certain amounts of cleaners and detergents to get the "Top Tier" seal These cleaners/detergents were specifically designed to target deposits on the valves and related components as a means of increasing durability/longevity.

Direct injection does not allow any of those cleaners/detergents to flow across any components (other than injectors) prior to injection into the cylinder.

Again I am making assumptions but based on somewhat of a knowledge base.

 

[adam1991]

Interesting that ford must recognize that and sell an additional one....

that's hardly evidence that "Ford recognized it was inadequate". All that is, is proof that Ford recognized people will buy anything if it says "Ford Performance" on it.

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