All - looking for advice on a catch can for my 2019 F150. 5.0 engine. Looks like there's a pcv breather line on both valve covers. One vents directly back to the engine (direct injection?) and one vents to the intake just down stream from the air filter. (That's what it looks to me) Assuming both types of injection are in use in this engine. Question is: can I T them together, send them to the catch can then T them back to their original terminations at the catch can outlet? Seems like a lot of plumbing but I'd rather not see the crank case ventilation returned to the combustion chambers.

 

If you consider yourself a better engineer than Fords Engineers, do it. Unless high performance, simply enjoy your truck. Burn Top Tier fuel, change oil around 5k, and on your 5.0 keep an eye on oil level, they are known for drinking it.

 

I was firmly in the "no" camp before I changed my intake manifold and saw how much oil poured out of it.

 

I installed one on my 2018 5.0. During the warmer months it catches about 3-4 tbsp of oil in 4k miles. In the cold months, you will also collect a lot of condensation, giving it a milkshake appearance. When I first saw it, I feared I had coolant getting the oil.🫪. But such was not the case.
So is it worth it? I can’t say. But if it’s reducing the amount of oil getting through and through the catalytic converters, then I guess it might be helping.

 

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Aside from all the other opinions; on any Boosted engine where cylinder pressures are higher; it depends on how much Crank Case pressure develops from Ring Seal blow-by in a given engine, driven use, how often Boost is entered for the application drive cycles.
Can't get away from it on many engines.
During Boost, pressure rises and is blocked because can't allow boost to add to the crank case pressure in reverse path.
Oil leaks are the end result if Case pressures go too high to often, for too long.
2.7 oil leaks and cracked Pans are the example on another engine family. The new Pans must include new Valve covers to re-route crank case pressures. to stop Pan leakage.
The PCV System is closed and monitored for leakage or being open on all engines.
Using CC won't affect anything if keeping a closed system. whether needed or not.
Your choice.
Good luck.

 

Listen to what the high mileage guys have to say. In my case, I'm over 138,000 miles with a completely stock (No catch-can) engine. Changed plugs at 85,000, air filter every other oil change, and that's literally all I've done to it. Still runs like brand new. Use a high quality oil and change every 5-6000 miles. Don't be afraid to "get on it" once in a while... or more often. The ol' Italian Tune-up works wonders on modern, high-performance engines.

 

I installed one on my 5.0 at under 5K. Ford service broke the mounting arm for it when they changed the battery 😤 at near 60K.
I just removed it.