Oil Catch Can FTW (10k mi amount)

[Cory S]

10k miles, 15 mpg, ~ 665 gallons of fuel that would have 5 oz of oil in it. Sorry, but that is negligible.

It’s like 2,456,289,334 revolutions of the crankshaft. That amount of oil over that interval is literally almost zero. People need to stop freaking worrying about this such minute shit.

If the catch can has a large 10oz capacity and filling in 1000 miles, then start worrying. JFC.

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[WildHorse]

People need to stop freaking worrying about this such minute shit.

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[ice445]

Catch cans are useful if you're beating the piss out of the car on track, and in theory it's nice to keep oil sludge off the IMRC flaps to avoid putting extra strain on the shaft and motor.

But I kinda agree that it's largely not doing much on a street driven car. I've mostly given up on them, especially when I learned the coyote is primarily port injected at lower loads and idle and such. So the valves should stay pretty fresh regardless. A cleaner intake manifold is nice, but that's about all you get for the effort.

 

[Charlemagne]

A cleaner intake manifold is nice, but that's about all you get for the effort.

You forgot the good feeling. That's priceless.

 

[ice445]

You forgot the good feeling. That's priceless.

That's very true, that's definitely the best part.

 

[WD Pro]

Typically there are normally lots of analogies between cars and women, but this scenario defo isn't one of them.

In this instance, an oily inlet is something I would defo try to avoid ...

WD

 

[KingKona]

....the carbon build up on the back of the valves doesn't cause a problem until it's so bad the air is restricted going into the cylinder.

Well.....if you chose to disregard dropping valves and grenadeing engines, like Audis and VWs like to do.

 

[PoCoBob]

Well.....if you chose to disregard dropping valves and grenadeing engines, like Audis and VWs like to do.

So we have one group of people saying it's nothing but hype and another saying it's blowing up engines. I'll stick to what I've done, I have a catch can on my Edge because it's only Direct Injected, I won't be putting one on the Mustang because it has duel fuel systems.

 

[KingKona]

So we have one group of people saying it's nothing but hype and another saying it's blowing up engines. I'll stick to what I've done, I have a catch can on my Edge because it's only Direct Injected, I won't be putting one on the Mustang because it has duel fuel systems.

I was making the observation that there's a lot more issues with carbon build-up on DI-only engines than restricting air going into the cylinder.

Even with dual fuel, since Ford Performance offers it, I think it's worth the time and money to install a catch can.

 

[NOZ34ME]

I will equate catch cans with politics. Catch can lovers will purchase and install a catch can no matter what the facts are. Much like voting for someone that is a proven horrible person. Nuff said.

 

[Jstang23]

Catch cans are useful if you're beating the piss out of the car on track, and in theory it's nice to keep oil sludge off the IMRC flaps to avoid putting extra strain on the shaft and motor.

But I kinda agree that it's largely not doing much on a street driven car. I've mostly given up on them, especially when I learned the coyote is primarily port injected at lower loads and idle and such. So the valves should stay pretty fresh regardless. A cleaner intake manifold is nice, but that's about all you get for the effort.

Even on the track, I doubt a catch can would serve a super useful purpose. Maybe if its a track only car, you're running 5w-50 oil and are running a built engine sure. But for most running HPDEs and 20 min track sessions, the amount of oil blowing by into the intake manifold should not cause many issues if at all.

I totally hear the better safe than sorry argument as well though. Especially since its relatively cheap and not likely to cause many problems itself. I haven't installed one on mine yet, but its something I've been thinking about... might bite the bullet and get one. Haven't been entirely convinced yet.

 

[junits15]

Well.....if you chose to disregard dropping valves and grenadeing engines, like Audis and VWs like to do.

I don't think you can safely draw a connection between dropped valves and valve buildup. As most cars on the road are DI only and dropping valves is still an extremely rare failure mode, even on VWs.

After about 80k-100k miles the buildup may start to reach a point where is effects airflow and MPG, but that's a LONG way to go and its only an issue on DI only cars. There is no mechanism where valve buildup could cause a dropped valve. Its a soft tar like substance.

I've been on team no catch can for a while, on a port injected mustang I really cannot see the need at all. It is a useful thing on a car that is getting a turbo that was previously NA, as the stock PCV may no longer be adequate and its a cheap and easily accessible replacement. But on a stock power NA car with secondary injection I can't see the need.

Remember, they tested this engine as is.

 

[NightmareMoon]

Even on the track, I doubt a catch can would serve a super useful purpose. Maybe if its a track only car, you're running 5w-50 oil and are running a built engine sure. But for most running HPDEs and 20 min track sessions, the amount of oil blowing by into the intake manifold should not cause many issues if at all.

I totally hear the better safe than sorry argument as well though. Especially since its relatively cheap and not likely to cause many problems itself. I haven't installed one on mine yet, but its something I've been thinking about... might bite the bullet and get one. Haven't been entirely convinced yet.

my ‘16 blew huge James Bond style smokescreens out of the exhaust pipes from the drivers side PCV at two spots on CotA. Very concerning. PCV lines were wet so I know where it was coming from.

valve covers are baffled to prevent that, but the right sequence of long duration high G loads had found a way to fill those baffles. They changed the baffle designs on the later model updates so I guess Ford was aware.

The takeaway is, while you may only collect a few oz of oil, that oil isn’t accumulating in fractions of a drop, it could be a very small number of events which dump significant oil.

On a street car, I wouldn’t worry about it at all, but if you’re pushing the limits as hard as some people do its a legit concern. So for my car, GT500 valve covers and catch cans on both sides. I mean, I had so much smoke other drivers thought I blew the motor, but the flag station workers didn’t flag me, they’ve seen it before, its not uncommon on track for a car to sip enough oil through the PCV lines to blow significant smoke out of the tailpipes.

 

[13GetThere]

You know, if you add a stainless steel catch can, it will add 2.5 horse power to the engine. If it's chromed, it adds a full five horses to the engine

Sorry. I just couldn't resist.

 

[Jstang23]

my ‘16 blew huge James Bond style smokescreens out of the exhaust pipes from the drivers side PCV at two spots on CotA. Very concerning. PCV lines were wet so I know where it was coming from.

valve covers are baffled to prevent that, but the right sequence of long duration high G loads had found a way to fill those baffles. They changed the baffle designs on the later model updates so I guess Ford was aware.

The takeaway is, while you may only collect a few oz of oil, that oil isn’t accumulating in fractions of a drop, it could be a very small number of events which dump significant oil.

On a street car, I wouldn’t worry about it at all, but if you’re pushing the limits as hard as some people do its a legit concern. So for my car, GT500 valve covers and catch cans on both sides. I mean, I had so much smoke other drivers thought I blew the motor, but the flag station workers didn’t flag me, they’ve seen it before, its not uncommon on track for a car to sip enough oil through the PCV lines to blow significant smoke out of the tailpipes.

I have yet to see a GT do that on track... also I said if you're really pushing the car or its a track only car it might be worth it. It is uncommon for a car to blow that much smoke out the back because of the PCV lines. Hence why most of the other drivers thought you blew your engine. Also which track were running at? I only ask because the track stations would absolutely give me the meatball if I was blowing that kind of smoke out.

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