aftermarket Oil Filler Cap

The early design depended on the cap and seal to be correctly seated and in perfect condition or else oil will escape.

Try removing the cap with the engine running......make sure you have goggles and a towel because the cam will throw oil as fast as you can wipe it off......between that and the positive/negative pressure that 4 bangers create (2 pistons rising, 2 pistons falling with two experiencing blow by) quite a oil storm will erupt.

The baffled extension that was installed for the 2014 model year keeps the raw oil spray from directly hitting the cap base, but if removed while running, it will still blow raw oil out since you created a blow by escape path.

Might help with your project though.

Rob

Robby said:

The early design depended on the cap and seal to be correctly seated and in perfect condition or else oil will escape.

.

Rob

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That explains what I've been seeing on the totaled '15 Cruzes I've been look at. I just bought a valve cover last month for a '12 and it didn't have the extension. Anybody have the part #. After I changed the cover, I smelled burning oil. It appeared to spray out of the cap. The intake has the typical bad check. I'll change that soon for about $300.

Try removing the cap with the engine running......make sure you have goggles and a towel because the cam will throw oil as fast as you can wipe it off......between that and the positive/negative pressure that 4 bangers create (2 pistons rising, 2 pistons falling with two experiencing blow by) quite a oil storm will erupt.

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Oh great, somebody did that and got hurt with a face full of hot oil..... sounds like a life lesson to me. Equates to touching the plug wires while the engine is running, just something that aware people don't do.

Gus_Mahn said:

That explains what I've been seeing on the totaled '15 Cruzes I've been look at. I just bought a valve cover last month for a '12 and it didn't have the extension. Anybody have the part #. After I changed the cover, I smelled burning oil. It appeared to spray out of the cap. The intake has the typical bad check. I'll change that soon for about $300.

Click to expand...

there are two extra parts and likely a different oil filler cap from the 2011, I have a feeling that the 2015 valve cover includes the extention baffle and ring lock.

The number on the extention is 55593202, but does not come up as an available part. there is also a locking ring that fits down over it I can not see a part number on it.

ssnscruzeeco2015 said:

there are two extra parts and likely a different oil filler cap from the 2011, I have a feeling that the 2015 valve cover includes the extention baffle and ring lock.

The number on the extention is 55593202, but does not come up as an available part. there is also a locking ring that fits down over it I can not see a part number on it.

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I bought the assembly. Would you post a close up picture so I can see how to properly orient the locking ring?

ssnscruzeeco2015 said:

there are two extra parts and likely a different oil filler cap from the 2011, I have a feeling that the 2015 valve cover includes the extention baffle and ring lock.

The number on the extention is 55593202, but does not come up as an available part. there is also a locking ring that fits down over it I can not see a part number on it.

Click to expand...

Yeah I kinda wanted to update just because of the cap and possible PCV update.

Gus_Mahn said:

I bought the assembly. Would you post a close up picture so I can see how to properly orient the locking ring?

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You buy the extension or the whole cam cover assembly?

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It's just the cap, extension, and locking ring. List is about $27. The extension is a tube with flappy baffles inside to knock down any splash. Also the o-rings seem much tighter than the OE cap. Obviously this all addresses an issue that at least some cars were having.

I just ordered a STANT 10140 cap. I am hoping that it has flat surfaces so that I can install the bypass return swivel connection into it. But something makes me think that I will have to ditch the original three piece cap assembly.

ssnscruzeeco2015 said:

there are two extra parts and likely a different oil filler cap from the 2011, I have a feeling that the 2015 valve cover includes the extention baffle and ring lock.

The number on the extension is 55593202, but does not come up as an available part. there is also a locking ring that fits down over it I can not see a part number on it.

Click to expand...

The new cap assembly is 55593201. It comes with the cap and tube with locking ring. The ring snaps down after installation to prevent the tube from spinning out when the cap gets removed. The o-rings are huge on both pieces, and the cap won't interchange with old style cap.

I see that it is keyed differently when I first looked, but removing the baffle, locking assembly should get me to the original oil filler cover of previous model years. Thankfully it is a warehouse stocked part so no restocking charge if it does not work out.

I should have it Tuesday.