When i had a look at my catch can this morning there was like a white milky cream stuff not alot but a little in the line ? There isn't enough blow by to even get to the catch can. The last time i cracked my head and also blew a head gasket there was like a milky cream inside my oil cap. I had one rc breather go to my manifold thru a pcv valve and the other to a catch can. Now i replaced the whole head brand new graphite head gasket etc and now have both rc breathers going to a catch can and my manifold hole blocked off. The can breathes to atmosphere and has no breather just a hose that goes behind the can. I can take a pic of the amount of water oil mix if need be. Also there is no milky crap in the cap but i think that's because i go to large breathers getting rid of it. Thanks alot Rick.

That mixture generally indicates a blown head gasket. Its when oil and coolant/water mix and get all creepy together. Obviously, your head isn't blown?

id be getting that checked out mate, more than likely head gasket

dont stress its quite normal to get water in the catch can. if the head is cracked you will see the milky crap under the radiator cap before it gets anywhere else

in his post he said milk in the cap, so id say get it checked!

Quote: Originally Posted by [SLY.747] in his post he said milk in the cap, so id say get it checked! read it properly... Quote: Also there is no milky crap in the cap Some original photos have not been recovered yet.

Quote: Originally Posted by [SLY.747] in his post he said milk in the cap, so id say get it checked! There was milky crap under the cap when it did crack and blow a head gasket as well. It doesn't have milk/cream under the cap and not sure about rad cap though.. The only place were milk/cream is in the catch can line were there is a clear hose.. there isn't heaps but there is a little there. Thanks for everyones help.. Rick.

lol thanks aus880, i missed the NO in front of it! probably safe then MAV

Quote: Originally Posted by [SLY.747] lol thanks aus880, i missed the NO in front of it! probably safe then MAV Cheers bud i was scared then i got another problem once again I kinda like having it turbo'd but alot headaches as well i spose that's what i get for pushing 224rwkw thru a stock engine on 33's Thanks again Rick. I wounder why that milky creaming crap is in there though?? Some original photos have not been recovered yet.

lol the headaches are part of the fun! could be from condensation? does the catch can have any breather on top? or anywhere water could possibly get in?

Its just from condensation man.

the rc breathers go into a T then into a single line to the catch can then there is just 10cm hose off the outlet of the catch can that just sits behind it with no filter or anything.. I hope it's just condensation !!! Thanks alot guys for ya help i'll have a look under the rad cap later on and see if there is anything there. Cheers Rick.

A little water will eventually evaporate, if it keeps getting replaced and it gets into the crankcase then there is a fault, head, block whatever... An easy and cheap thing to do is retorque the head bolts, no fuss way to check without needing to take head off, when you have cam cover off its a good chance to inspect for any (small) creamy residue around cam tunnel. Also be good idea to add a bottle or two of chemiweld into radiator water as a pre-emptive measure etc... and fill up water to remove air bubbles etc good luck,

Just leave it, its nothing to worry about, dont go throwing Chemiweld in it..... You get warm steamy gases coming out the breathers, its only natural that you would then get some condensation in the lines which when left, settles/mixes with the oily sh1t in the lines...hey presto, milky sh1t.

I guess I should have added, if you find creamy residue along the head then add the chemiweld, in any case you can always flush it out either way as it does no damage and might save a minor leak developing later on...

im not 100% sure but wouldnt water in the oil if in the catch can, and u have a return line to the sump it would be getting put thru the motor as well? probably not a good thing, unless u run a valve to drain the oil from the catch can so it isnt going back into the motor, not sure how urs is setup but just a suggestion.

Thanks alot guys I'll have another look how much white crap is really there and also check the rad. I might even also look at a filter for the catch can. Cheers Rick. Quote: Originally Posted by [SLY.747] im not 100% sure but wouldnt water in the oil if in the catch can, and u have a return line to the sump it would be getting put thru the motor as well? probably not a good thing, unless u run a valve to drain the oil from the catch can so it isnt going back into the motor, not sure how urs is setup but just a suggestion. Umm well at the moment my car doesn't blow enough oil even to fill the lines up or reach the can it's self .. I only noticed the milky crap in the clear oil line before the catch can and nothing has reach the can it's self yet. Can vents to atmoshore and that's it no oil return lines or anything of that kinda. cheers Rick.

Ah ha thats interesting MAV, Thats a condensation issue, which is less likely its a blown head gasket and could be the result of water from byproducts of combustion via blowby, so its less likely to be an issue. ie Normal because when fuel burns it gives off water vapour and gradually over time some can be blownby the rings and end up in the crankcase, normally its vented off when the oil is getting hot and vapour goes out the PCV valve - but with a catch can you are instead condensing it, so more likely you will see it, just keep an eye on it and make a note in your diary that when you next have cam cover off you take a precaution to retorque head bolts. But, head gaskets are not perfect seals. If you get ping or detonation then its pretty violent and can cause a temporary one way breach of the gasket so exhaust gas can seep past the gasket, when the ping goes away the gasket is fine, its a simple case of pressure differential. This can result in far more transient pressure which can get into oil galleries depending also on how good the gasket is and where channels or breach points can open up etc. It might also point to a subtle management issue in that the tuning could be on the lean side when on higher boost if turbo or huge amounts of carbon buildup in a n/a and/or timing way out or even bad fuel too. This is a contributory factor not necessarily a black and white causal issue etc...

You said you changed the head and gasket because you blew the last one. The water in the oil is probly then.