Oil Catch Can - Surprised By Results

[BlaineBug]

31 minutes ago, TheRiver said:

It's not "straight, clean oil"!!!  Pour it into a glass container, and watch it separate.

Sure seemed like it to me in all honesty.  Next time I will assess differently and report back.  See you in 500-1,000 miles!

[Bush Bandit]

The main issue is the "suction" from the intake. Block off the intake hose and route the exit hose from the catch can to the atmosphere (drop hose). You can leave the two on the valve covers alone

 

You can always send your catch can collections to Blackstone if you want a detailed analysis. 

[BlaineBug]

21 minutes ago, Bush Bandit said:

The main issue is the "suction" from the intake. Block off the intake hose and route the exit hose from the catch can to the atmosphere (drop hose). You can leave the two on the valve covers alone

 

You can always send your catch can collections to Blackstone if you want a detailed analysis. 

What are you recommending?  Block off the intake hose and put a breather filter on the intake manifold instead?  How does the PCV valve function without vacuum from the intake?

[Bush Bandit]

On 4/26/2024 at 9:31 PM, BlaineBug said:

What are you recommending?  Block off the intake hose and put a breather filter on the intake manifold instead?  How does the PCV valve function without vacuum from the intake?

 

I have the PCV breather under the throttle body going to a catch can and then a drop hose from the catch can. I blocked off the intake manifold side of that the PCV goes to.

 

I left both valve cover vents alone.

 

I've had this setup for 75k miles 

[BlaineBug]

1 hour ago, Bush Bandit said:

 

I have the PCV breather under the throttle body going to a catch can and then a drop hose from the catch can. I blocked off the intake manifold side of that the PCV goes to.

 

I left both valve cover vents alone.

 

I've had this setup for 75k miles 

Doesn't this indicate that no vacuum is being applied to your PCV valve?  The PCV valve is the outlet from which the oil comes, no?