Oil Breather is... leaking?

is there a rubber o ring on the breather?

Passenger side? It's normal. Breathers aren't there to stop any leaking. Breathers are there to stop the nasty PCV oil from re-entering the motor.

Yeah, the O-Ring is in, that's the first thing I thought of as well. I didn't really think it was going to "stop" the oil, but I did think it would "help", ah well, just means more cleaning :cP Thanks guys.

Which breathers you running ?

Yea man, what Nasty said. Its not a sealed system anymore so will escape out of the motor. The breathers allow the motor to vent pressure to the atmosphere rather than push it into the intake.

you should clean the breathers every 2-3 weeks. i used to get blowby out the passenger side valve cover breather. i switched from mobil 1 5w20 to mobil 1 5w30, and i have no oil out the breather anymore.

If your running a K&N on the Pass side oil filler tube you can expect a bit of weepage from the pressure. I put some heavy steel wool in the filter to slow down the oil and it helped a bunch. The other thing that I've read in some other threads is to change to a 5W30 and that also had good results.

The other option is to run with one of these set ups.

Valve Cover Breather, Valve Cover Breathers: Metco Motorsports
<b><font color=red>FREE SHIPPING!</font></b><br>CFM Billet Valve Cover Breather Kit for 2005-08 Ford Mustang GT - 1-1020

Some of the others are running these with good results as well.

i've been having this problem too. i thought about switching to 5w30 but haven't gotten around to an oil change since i noticed the oil seepage.

steel wool... great idea, reps!

The taller the breather the better for this problem.

I think breathers are a bad idea... THe pcv needs to do its job. If you must run a breather then you should stuff something like a shop rag or steel wool into the filter to help stop any oil, but once the "stuffing" is saturated it will leak again, i have a vacuum pump on my motor and it runs into a breather that i have to empty after 5 runs and ring out the shop rag i stuffed in it..

rodeheavers said:

I think breathers are a bad idea... THe pcv needs to do its job.

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....

Ever see the butterflies of an engine that's had a PCV system doing its job for 25k miles?

rodeheavers said:

I think breathers are a bad idea... THe pcv needs to do its job. If you must run a breather then you should stuff something like a shop rag or steel wool into the filter to help stop any oil, but once the "stuffing" is saturated it will leak again, i have a vacuum pump on my motor and it runs into a breather that i have to empty after 5 runs and ring out the shop rag i stuffed in it..

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Right...

Actually Nasty's right... that is BS. Vacuum pumps bypass the PCV system. And you sure as heck aren't running a vacuum pump on a daily driver. Well, not for very long at least.

EfylSetaf said:

....

Ever see the butterflies of an engine that's had a PCV system doing its job for 25k miles?

Click to expand...

No sh**. I've cleaned mine twice...once when I found it dirty during an attempt at installing a CAI, another for a computer code, and I'm due again in another 10k miles or so...yikes.

breathers are a BAD idea??? wow.. thats news to me...

Mine leak like crazy... but Im sure my rear main seal and rings are HAPPY!!!

PCV only work when there is a vaccum at idle or part throttle anyway... it leads to detonation (oil in the combustion chamber... lowers octane A LOT)....

rodeheavers said:

I think breathers are a bad idea... THe pcv needs to do its job. If you must run a breather then you should stuff something like a shop rag or steel wool into the filter to help stop any oil, but once the "stuffing" is saturated it will leak again, i have a vacuum pump on my motor and it runs into a breather that i have to empty after 5 runs and ring out the shop rag i stuffed in it..

Click to expand...

The PCV is still doing its job with breathers. The PCV valve is actually in our valve covers. Anyways, all the breathers do is change where the gases are coming from and going. The crankcase is still getting vented of any positive or negative pressure. In theory, negative crank case pressure, even though it will never be as high as positve pressure, is just as bad for your motor.

Catch can with closed PCV system FTW

Dimora, you should run breathers to vent that pressure. Dont believe me, just ask Aric. He said that every car they build gets a breather.

DiMora said:

Catch can with closed PCV system FTW

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Posh, unsubstantiated heresy. :tomato