Matthys333

iTrader: (5)

I opened my oil cap yesterday to put more oil in and I noticed some slimy white residue on the thread of my cap. This doesn't sound good to me. So if anyone can relieve my worries about this, PLEASE let me know. The motor only has 5k miles on it and was bridge ported, so I figures I wouldn't have any problems with it. Thanks guys

katkaroto

hmm... i've seen that before... but i never cared to bother it. it seemed natural for me... good luck

need-a-t2

iTrader: (9)

that is moisture being burt off in the oil pan. If you live in a colder climate it's more than likely just condensation burning off.

however, if there is a LARGE amount of it, it's likely one of your coolant seals has failed and coolant is getting into the oil system.

If you aren't loosing coolant I wouldn't worry about it to much. just clean it off.

Matthys333

iTrader: (5)

Hoping that's not the case, what if it is? How much work will it be to fix the coolant seals?

need RX7

iTrader: (4)

But if you're not losing any coolant that is most likely not the problem.

Vierte

iTrader: (2)

Search "lung butter" or "lung mustard". Its condensation that builds up in the oil filler neck. You need to vent it.

mbonner

I have that slime too, can I vent it with a 1/8" hole drilled in the screw-off cap?
Any suggestions?
Mike

misterstyx69

iTrader: (142)

Yes you can.Put it to a vented catch can.Problem solved.

Go48

iTrader: (7)

Or take the car for a long drive to fully warm it up and the gunk will disappear. Short trips in cold weather tend to cause a build-up of the condensation causing the emulsion you see. It's not a big deal unless there is LOTS of it and the engine oil looks milky.

Matthys333

iTrader: (5)

Just to get this right. Drill a whole in the oil cap and run a tube or hose to a catch can? I've never heard of this, so I'm just making sure I'm understandin correctly

plainandsimpo

if i'm not mistaking, isn't there a nipple that sticks out right under the oil cap .. ..
if you're looking at it front the front of your car it should be to your right ,on the very top of the oil filler tube right under the oil cap...
i mean that's where i stuck a tube to and ran it off to a catch can.... and oh yea.. i always have some amount of creamy residue right under the oil cap............

the last line dont sound right lol

Aaron Cake

iTrader: (1)

This almost never happens. Never. It's so rare it's probably not worth mentioning and scaring others with.

It's typical moisture buildup from many short trips or a malfunctioning PCV system. Before you do crazy things like drill oil caps or make a catch can, just test the purge system as per the Haynes/FSM.

ACE0000

Is it really bad if I have some creamy white gunk like this coming up where my dipstick is, it seems to get a lot more when it's colder but the oil looks fine, and also as far as I know I'm not losing any coolant I just get a bunch of it going up the dipstick. I don't really have any at the filler neck though.

Aaron Cake

iTrader: (1)

As already mentioned in this thread, test your purge system. A malfunctioning purge system can cause the gunk to build up. Short trips will exacerbate the problem.

ACE0000

Ok I think that is probably the problem I was just wondering because I hadn't heard anyone talk specifically about the dipstick only the filler neck. I was worried it was coolant seals. But I'm not losing coolant as far as I know and it's too cold out to tell if there is extra smoke at startup. Anyways I'll test my purge system when I get a chance.