2021 2.7. 9-10,000 miles /yr. No towing. Easy daily driver. What's the scoop on catch cans? How necessary? Thx ahead of time for any info.

 

Please search the forum - this topic has been discussed at length countless times. Catch cans are not needed.

 

i searched 10 pages on 21+ before posting.

 

Search other model years because in this aspect the discussion is the same. And when he said they are not needed he means you can drive your truck for 60k miles without one and even higher and it'll still work fine. Do they collect crap from going back through...yeah...do they help....yeah....but very little if you trade your vehicle in as often as most people do. If you want to keep your truck 200,000 miles, I would get one now the benefits will be worth the cost.

 

I added a catch can to my Shelby gt500 when I put a smaller pulley on the super charger which increases the amount of air going into the intake which raises intake pressure. I would check in when I did maintenance and drain it, didn’t get that much. With a stock engine if it was needed you would think the factory would design it with one.

 

No need. Especially with dual injection.

 

They don't put them on because they don't care about the vehicle after the warranty runs out and can't trust people to maintain them causing more issues while the warranty is still active. Ford makes them...must be good for something.

Cat Failure--safe to say....oil from blow-by is not good for many reasons.
"If there is an issue with the engine burning oil, there could be a problem with the PCV system. If it’s not working properly, excessive oil can get into the combustion chamber and exhaust. It could be plugged up or not restricting enough and causing oil to leak into the intake."

It would still take a significant issue to cause cat damage but monitoring your catch can can give you piece of mind in monitoring your blow-by. If you're getting zero or very little...awesome. But as time goes on and rings wear it will increase.

The way I see it is do I need one..NO. However...for the cheap cost can I monitor my blow-by and prevent it from going back through yes. We can agree....what the engine takes back through isn't GOOD for it. It can just HANDLE it. That's tells me all I need to know. With that being said one must be installed correctly and maintained correctly.

 

I installed a JLT (now J&L) catch can on my 2021 Powerboost and generally it catches a lot of water condensation and only a very small amount of oil. This is especially true in the winter which is a bit of a pain and a concern since I don't want the system to become blocked with frozen water in the line. You have to check it pretty often at least until you know how much fluid you are pulling. On the good side install was super easy and the can is mounted in a relatively easy position to access. At this point, based on what I have pulled, I wouldn't really recommend one on this engine.

 

The catch can is causing the water. It stays hot longer and gives the water a place to condensate.

If you look at the 5G forum 2015 to 2020 there are a few threads that have the 2.7 well over 300,000 mile with no issues, including mine that had 306,000. If you are racing it all the time get one, if you drive normal then I feel you you don't need one.

 

I've had the same one on my '21 5.0 for ~2 years. It's not even half full when I change the oil at ~5k miles. Does your PCV hose freeze up without a catch can? No. The idea of the hose being filled with water, or even the catch can is ridiculous.

Are they really needed? No. Do they hurt anything? No.