DIY oil cap breather how-to

[pl4yboy]

I vented my PCV on my 08 and had no oil issues in 40k miles. I removed it from the intake tube and simply stuck a filter on the PCV hose.

[TXsilverado]

I vented my PCV on my 08 and had no oil issues in 40k miles. I removed it from the intake tube and simply stuck a filter on the PCV hose.

my theory, it gives the motor plenty ventelation to vent the bad fumes, but does nothing for getting rid of moisture. especially if you just connect the two valve covers with a hose and put a breather on the oil cap. a breather on both covers is how i would go if i did it. but even with that, the vapors vent, but the moisture gets caught in the filter and drips back down when the motor cools off.

[pl4yboy]

Good theory. I've never thought of that.

[farmtruc]

IF you notice any vapor smell in the cab you can always take the vent to the air filter. That way the smell gets sucked up and recycled.

[EmmerichLSx]

I just have breathers on my valve covers. I've drained the oil before and could see the moisture. At first I thought coolant was getting into the oil.

[TXsilverado]

I just have breathers on my valve covers. I've drained the oil before and could see the moisture. At first I thought coolant was getting into the oil.

exactly my point. a pcv system would have sent that moisture into the intake and burnt it off along with getting rid of the fumes. the problem is the amount of oil it sends to the intake with it. theres no problem putting a filter on each valve cover...just change the oil more often. my truck sits for weeks to months at a time so im trying to figure out the best way to keep a pcv setup, but not pour a quart of oil into my intake every 1k miles.

[bangbangskeetskeet]

exactly my point. a pcv system would have sent that moisture into the intake and burnt it off along with getting rid of the fumes. the problem is the amount of oil it sends to the intake with it. theres no problem putting a filter on each valve cover...just change the oil more often. my truck sits for weeks to months at a time so im trying to figure out the best way to keep a pcv setup, but not pour a quart of oil into my intake every 1k miles.

Catch can will take care of that...

[Beatdown Z]

IF you notice any vapor smell in the cab you can always take the vent to the air filter. That way the smell gets sucked up and recycled.

I've thought about doing this, but I'm worried it will contaminate the MAF sensor. What do you think?

[farmtruc]

so far so good on the ones we've done. but i bet it would be an issue if blow by was a concern; on a boosted engine.
of course sd isn't a problem.

[sloCaddy]

why are there guys that only run breathers on the valve covers and push the same amount boost as guys that run cath can setups and say they dont have any problems? is it just a matter of the amount of blow-by or something else?