Oil in coolant.. No coolant in oil ??? HELP PLEASE

[ruffrydaz]

I have a mk5 golf gt tdi 2.0 with 89k miles
I looked at the coolant today and realised it had lots of oil in it
I then checked the oil which was just on the minimum line. I topped this up and got home.
There is no coolant in the oil cap which rules out the headgasket and no overheating.
My friend said its the oil cooler??
Any ideas please, i dont want to risk driving it
thank you

[PDT]

unfortunately this is a very tricky one to diagnose over the web, if you suspect the oil cooler they are relatively easy to remove and most radiator testing places will be able to pressure test it for you.

[jmspear]

I reckon its the oil cooler, it went on mine, I was losing small amounts of coolant, nothing serious, no oil in water or water in oil but was leaking water out of the oil cooler, the diagnosis was to look at the cooler it sits just above the oil filter, it had collant crystals on it where the coolant was boiling off after it had leaked out, was covered in blue / white fur! when I had the system pressure checked by VW at the main dealer it didn't show up any leak at all!! was only using about 1/2 cup of water every 4/6 weeks so was not a big leak.

I changed it myself and it was a ba$tard to change!!

Mind you I only took off the oil filter and intercooler hoses and left everything else on the engine!!

Oh mine was a 55 plate as well if relevant

[ruffrydaz]

Thanks
Gonna get my friend to take a look at the cooler this week

[ruffrydaz]

If anyone with my engine has this fault heres some info

Changed the cooler and still had a sh*teload of oil coming through. I thought damn its not that after spending 175 quid on the part.

After using forte bio degreaser it seems to work well. Flushed it a couple times with that and a few hours later only a few drops of oil in the resevoir which is nothing like before so i guess thats the residue. Fingers crossed.

[OEM+ DUB]

This issue is similar to that experienced when an oil cooler fails on a MkII Golf GTI.  You replace the cooler and there is still loads of oil residue in the cooling system.  Putting dishwasher powder into the expansion tank and static running the engine for 10 minutes before allowing to cool then draining off cleaned the system really well.