White Gunk

[Yumann]

Anyone know what this suggest? I have white gunk on my oil cap

The only thing that comes to mind is a dodgy thermostat cause the car never reaches temperature anymore only gets to a 1/4 on the guage when it use to be 1/2.

Could this be causing the oil not to reach temperature causing the gunk?

 

[Fl@pper]

check ya water levels

and ya head gasket will need looking at i expect

 

[Yumann]

Water level seems to be fine.

 

[Steve_B]

Check the oil levels as well, if you've run the oil low and take the engine to high revs frequently then you can get the gunk on the oil cap. Had the gunk problem on my last car which I didn't check the oil levels on regulary and gave a bit of a thrashing.

 

[k11jrp]

you didnt get too excited did you???

 

[matt_s]

If the car isn't getting up to temperature along with the current cold wet weather you just get a bit of condensation in the engine. Same as doing short journies. If you sort out the temperature problem the gunk should disappear. If it doesn't then start to worry.

 

[ALEX**]

ewww white discharge, better see a doc

 

[Yumann]

I was waitn gor that one guys!

Thing is I have been doing long journeys and the car just never heats up properly according to the temperautre gauge.

 

[dannyk]

If it was me, i'd be worried. This usually means water in the oil, head gasket goosed.

 

[Yumann]

Read above water level is fine!

 

[dannyk]

Read above water level is fine!

Far enough but it doesn't take alot of water to leave this residue on the cap mate.
Therefore levels may seem ok.

 

[Cupra Kid]

Had the exact same thing on my old 1.4 engine flush and an oil change fixed it, just due to so many 4 mile journeys to work that a bit of condensation build up occured. I wouldnt worry my mums 1.4 polo has had it for 4 years now

 

[Scotty_b]

Would you say the oil looks milky?

 

[Yumann]

Neh the oils looks fine scotty.

Its always had it on the cap but seems to be getting worse. Must be the time of year cause its cold and wet. And neveres reach full operating temp

Going to test the water temp in the next few days. Accord to the sevice manual its meant to be between 84 - 98c

 

[Scotty_b]

Throws my water in the oil idea out then!
Ooops just saw the pic!
what oil are you using? as this could be a factor

 

[mik]

Jeez that is an alarming picture - where the **ck did you get that carpet?

As per the suggestions - most likely to be your "underheating" issue.

 

[jenk]

check your breather hoses for blokages. more than likely the problem my friend. Had the same with mine some time ago.

 

[Triple D]

I would have said if its in the oil cap, check the dipstick and if its on that too then it might be the head gasket.

 

[Yumann]

I am using 10-40 oil

As for the breather that could be it cause i remember doing the filter and seeing gunk on the breather pipe.

As for the carpet its old peice in the garage Mik

 

[ibiza_95]

more than likely its water in the oil, cos this turns the oil like a mayonaise