What is this gunk in my Oil Fill Neck?
03-25-13, 04:01 PM
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What is this gunk in my Oil Fill Neck?
I opened up my Oil cap to find this yellow gunk in the filler neck. It's like coolant is leaking into my Oil but the dipstick is perfectly clean of it. I use Castrol 10w30 synthetic. I cleaned it off and am going to see if it comes back. Is my cap loose and moisture is just seeping into the neck?
Thanks
-Ghooble
Thanks
-Ghooble
03-25-13, 07:42 PM
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Well as an IT worker I'd sure hope so. I didn't really know what to search for and figured if I made a thread then others would be able to find this.
I appreciate the responses...
-Ghooble
Last edited by Ghooble; 03-25-13 at 07:44 PM.
03-28-13, 10:59 PM
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commonly known as "lung mustard".
when the engine heats up/cools down. the oil tends to froth and then Condensates..it Rises to the cap and sits there so you can open your cap and Say "WTF is this crap?"
when the engine heats up/cools down. the oil tends to froth and then Condensates..it Rises to the cap and sits there so you can open your cap and Say "WTF is this crap?"
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03-29-13, 08:20 AM
#8
talking head
no mustard here .. and this engine is both LPG and turbo.. and as such it should have a worse issue than most
its all in the vent line hose sizes and the positions
vapours run out of the top of the cap to filtered air pipe pre-turbo ( or air cleaner in NA car )
a second,, same sized nipple and hose halfway up the filler pipe draws filtered air from a rocker cover filter tucked in corner of bay ( via a one way valve )
and thus the system is in constant draw though ventilation while the engine runs
using the high point allows a more total scavenge of vapours and avoids getting too much liquid condensate carry over
.. i run without a catch can.. and for turbo am using 9.5mm EFI fuel line as vent hose
only hassle is you need to loosen the hose clamp to take off the filler cap
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