For Those Who Don't Think a Catch Can is Needed on Gen 4 s...

Fozzy said:

So you don’t think any of that vapor and oil or extra vapor and oil blows by the rings with the fuel without one? On our turbocharged SxS they may not have the same knock protection as the EcoBoost. With extra oil and water introduced into the cylinders it can change the effective octane rating resulting in a lower knock protection. We see a increase is dirty oil as well as the usual dirty intercooler and compressor wheel.


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Always a possibility, but I don’t think it will show on an oil analysis. If it does, the difference will be so small it will have no functional difference. Just my opinion. The change in the oil doesn’t build up over time, because you change the oil. Where as the deposits build over time. That is the important part.


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FYI - new oil spec for GDI engines. Doesn't mention cleaning up intake valves though.

Original RockAuto newsletter (but this will change every month): https://www.rockauto.com/Newsletter/

After a few weeks use this link to click on the Oct 2020 article: https://www.rockauto.com/Newsletter/Archive.html

Better link: https://www.motor.com/2019/05/get-ready-gf-6-motor-oil/

Any chance Ford dealerships will start using the new oil for EcoBoost Expeditions?

It’s only $150 for a JLT catch can setup, but it only is for the passenger side. Isn’t there a driver side PCV system that would be still feeding the intake? Making the JLT setup partially useless? Why just one side and not the other?

MxRacer965 said:

It’s only $150 for a JLT catch can setup, but it only is for the passenger side. Isn’t there a driver side PCV system that would be still feeding the intake? Making the JLT setup partially useless? Why just one side and not the other?

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My post #30 in this thread at least partially addressed this. If my assumptions are correct, then passenger side only will catch most of it if you don’t run boost constantly. If you tow or run long uphill grades that require boost, then you may see more of a benefit of using both sides.

If somebody wants to experiment, they could buy an individual can for each side and compare the amount collected. If somebody would buy me a second JLT catch can, I could surely figure it how to mount it on the drivers side as well.

Has anybody inspected their drivers side turbo to see if it is gunked up at all?

I went with the pax side b/c I did not want to put a hole in my intake system.
I also felt/heard that the "lion's share" of oil misting comes from the pax side. hence why I am only running the one side with the one way check valve.

At this point, if someone could convince me with proof having both were significantly better, I'd consider it. But at this point with many saying "you don't even need it" I figure solving 60-80% of an issue some say ain't an issue is better than 0% LOL

LokiWolf said:

Sounds like an excellent plan! I think you will be happy with it over all! Not really heard any complaints from the kit once installed.


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Just finished up the catch can and the air intake.








Waiting on the tune files to load the 93 street performance one on Monday [emoji48]


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My question is if catch cans are important to vehicles why dont they come with them? If they do come with them im assuming the factory ones are crap?

Jarf11106 said:

My question is if catch cans are important to vehicles why dont they come with them? If they do come with them im assuming the factory ones are crap?

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In all seriousness, did you read the thread, or the others on the subject on here?

Simple answer...another thing for the consumer to mess with, that isn't even capable nowadays of changing their own oil. Hoping it gets to the end of warranty before the deposits possibly become an issue. Bottom line, want to keep the buildup of oil out of your intake and the intake valves, then install a catch can.

I'm not keeping mine long enough to deal with having to put a catch can on an 80,000 dollar vehicle that probably should have had one in the first place.

Can't wait until they come out with an electric one of these expeditions with 400 - 500 mile range.

Once that happens ford can keep this horribly designed 3.5 v6.

2020ExpyPlatinum said:

I'm not keeping mine long enough to deal with having to put a catch can on an 80,000 dollar vehicle that probably should have had one in the first place.

Can't wait until they come out with an electric one of these expeditions with 400 - 500 mile range.

Once that happens ford can keep this horribly designed 3.5 v6.

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horribly designed 3.5 V6? Huh. This motor is GREAT. I am on my 3rd Expedition with it. Great power, same or better MPG than any V8 out there in the same size SUV.