Oil Catch Can, Eliminate that knock!

Unless you know someone.

 

On my iQ there is an insulating sleeve around the PCV hose. I guess it is there to keep the stuff passing through hot/volatile. With the OCC the goal is the opposite, to condense it out.

Do you guys think we need a larger EGR tract to compensate for the OCC cooling effect???

 

Yikes...I thought your consumption was going down with all the stuff you have tried? Bummer man!

BTW - I tried an experiment this winter...I ran quite a few cans of Techron through our 2010..and subjectively it seems to have helped. Now that spring is coming I can try to take more objective measurements.

 

It had maintained at ~20 ounces every 10k mile oil change. But that has already been consumed in 4K miles this round.

No change in driving route or traffic. It is a bit colder out here, but not like orther parts of the country.

I’ll pull it off and update with results.

 

I doubt it.

A properly installed, unvented OCC would not impact air quality in anyway. Still, sadly, I think you're right. Any inspector that sees an extra item in the PCV circuit, will shoot first and ask questions later. If at all.

If you plumb it in below the intake, say mounted on the front cross beam, or just sling-supported somehow, it's probably would not even be noticed in an inspection. The less conspicuous the better.

Note if you do mount it on the cross beam, that has the front/central jacking point. Accordingly, you'd want to use rubber washers or similar, to make the connection slightly flexible.

 

Thank you Mendel for the hints/advice!

The smog check places have THICK manuals with diagrams that show them what everything's supposed to look like. Anything that is connected upstream of the cats, and including changing the cats, can cause a visual fail. They don't need to run the sniffer to fail you, sadly. It is why I look for intakes that have a CARB EO#, which exempts/allows that particular modification. (There are still those not so nice inspectors that may try to give a hard time, even with the EO sticker in plain view).

I may visit one of my favorite smog check places to see what the guy thinks about these.

The relatively low use of our cars seems to make them prone to having this blow by, as seen on my iQ forum link pictures. The oil there looked very clean though, in comparison to what has been shown on this thread.

Curious how quality oil factors in. Both v and iQ have Mobil 1 AP in them, and both running 91 octane fuel. This is the highest commonly found around here in CA. (Some states have up to 93 common).

 

I'm currently testing some TC-W3 oil in the gas. This is supposed to clean out and lube the fuel system/ valves/ cylinders/ rings and provide better compression. It's designed to burn cleanly while removing deposits at the same time. I've used it on 3 previous cars already with good results.

The TC-W3 oil might be something worth trying. I'm currently on my second tank of 1 oz/5 gal of gas. This ashless 2-stroke oil ratio is equivalent to burning 1 quart of oil every 8,000 miles - without introducing the metals that foul catalytic converters.

I'll report my progress in the summer months.

 

Make sure you do an oil analysis using that stuff, I'm interested to know the results!

 

So what brand of TC-W3 are you using?

 

Pennzoil Marine Premium Plus Synt TC-W3. I put it in a sta-bil container. Measuring is then super easy and it doesn't get on your fingers.

Pixel XL ?

 

So I was able to test this today on not only our 2010 with 174 k miles on it, but 3 other Prii that @Pedal Logic had at his place.

What was tested:

• 2010 Prius II with 174 k miles (our Prius)
• 2010 Prius III with 75 k miles (Marc’s ride)
• 2014 Prius v with 46 k miles (Marc’s wife’s ride)
• 2018 Prius c with 500 miles (Smart Pedal test case)

All cars when started and the engine oil cap removed exhibited the air blow by phenomenon .

Marc confirmed no oil usage on his 2 Prii and the rental c is not using any.

So this test seems invalid for the Prius line.

Open to other suggestions .

 

Ignoring the blow-by test thing for a minute and thinking about other stuff:

check thermostat and water pump, coolant lines.

maybe do UV dye leak test? cheap and easy, less than $20 for dye + UV flashlight

 

Not sure what I would be looking for as I can confirm no loss of coolant or head gasket issue.

 

If you can write out (or PM me) what you would like to see done, I’m game.

I will have the windshield wiper cowling off in about a month, so I can perform some testing.

Let me know.

 

Sounds like a plan .

I’ll be ready on Saturday April 6th.

If you have something to try by then, I’ll have another set of experienced hands ready to gather more data.

 

I'm planning my spring maintenance which will include spark plugs and EGR Valve/Cooler cleaning. In preparation, I picked up this endoscope on Amazon -- it was $13 delivered. It was delivered yesterday, was easy to use and seems to work pretty well.
I want to be able to see inside the cyclinders because my '13 is burning oil, and I want to know if there is any vertical scoring that would indicated excessive wear. It should also give me a good way to look at the intake valves.

 

Interesting..I need to do the same stuff on our Prius v. I should pick one of these up as well.

Edit: Ordered it...thx for the link!