Oil Catch Cans

[FredBGT]

I'm wanting a dirty side PCV oil catch can. Is there any appreciable performance differences between the aftermarket billet ones? I've looked at Mishimoto, J&L and UPR. Any reason to go with one over another?
Thanks.

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[JAL]

I researched them for my S550 and ended up buying UPR.
I'm sure they're all fine choices, but I went with UPR and will buy one for my S650 as well. Made in the U.S., price is right.

 

[Zig]

Some items to consider: ease of use (how is it emptied) and ease of utilization (sight window)

 

[steveo1960]

I researched them for my S550 and ended up buying UPR.
I'm sure they're all fine choices, but I went with UPR and will buy one for my S650 as well. Made in the U.S., price is right.

That's the one I am looking at as well.

 

[RLE55]

I've got J&L on the F150.
https://www.jlosc.com/ford-vehicles/ford-trucks-suv/

 

[Kabayo]

I'm wanting a dirty side PCV oil catch can. Is there any appreciable performance differences between the aftermarket billet ones? I've looked at Mishimoto, J&L and UPR. Any reason to go with one over another?
Thanks.

If catch cans really make a difference, I can’t see why Ford doesn’t put them on at the factory

 

[keithwalton]

If catch cans really make a difference, I can’t see why Ford doesn’t put them on at the factory

Might not be legal to sell them pre-installed in all locations. Didn't the dark horse come with one stored in the boot from factory for a while along with a few other accessories that were fitted at the dealer.

 

[DCS]

Some items to consider: ease of use (how is it emptied) and ease of utilization (sight window)

"Ease of use". I went with the UPR for several reasons. However, the "Ease of use" issues ain't one of them. To empty it I'll have to take it apart (both hoses & the attachment knob). It cannot be unscrewed in place.
BTW: All the others may have the same issue. There's not a lot of room under the hood!

 

[Mastermind46]

I never understood why they are so small and don’t all have drains included for this platform. The ones for the Mazdaspeed I had previously seem so much more user friendly. Check out Damond Motorsports.
I know none of the vented options will be EPA compliant but having a drain valve and a hose to the bottom of the car shouldn’t be an issue.

 

[Timry2]

If catch cans really make a difference, I can’t see why Ford doesn’t put them on at the factory

State laws in CA forbid them. So you have to get one thats easy to instal and remove before the smog inspection

 

[JimC]

If catch cans really make a difference, I can’t see why Ford doesn’t put them on at the factory

Because they require regular service or it will screw up the pollution equipment (and engine). Think of how bad the average person is about taking care of their car and its easy to see why manufacturers use the easy method of routing things into the intake to be burned instead.

 

[Zig]

Because they require regular service or it will screw up the pollution equipment (and engine). Think of how bad the average person is about taking care of their car and its easy to see why manufacturers use the easy method of routing things into the intake to be burned instead.

Why not just route it to the catalytic.

 

[JimC]

Why not just route it to the catalytic.

Likely that the oil vapors would plug up the cats, causing more issues.

 

[Zig]

Likely that the oil vapors would plug up the cats, causing more issues.

The cat is much hotter than the combustion chamber.

also there are some versions of ‘catch cans’ that are more separators than cans and actually ‘drain’ back into the oil pan / system.

 

[Vapor Blue GT]

The cat is much hotter than the combustion chamber.

also there are some versions of ‘catch cans’ that are more separators than cans and actually ‘drain’ back into the oil pan / system.

If that theory worked then no cat would plug up. There’s a difference between hitting a hot object and being exposed to a combustion. Also could possibly affect the O2 sensor readings.
Although with as little residue that is actually captured on most NA motors it probably wouldn’t make a difference. A boosted motor could cause more issues routing to the cat.

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