Oily water??

[Muzz67]

I have noticed that the water in the expansion bottle has a slight film of oil on it. 1990 2LT-E. Engine starts and runs perfectly, and doesn't use oil or water. Any suggestion as to cause, and any repairs, appreciated.

[mark g8awo]

you have two possibilities

one being contamination when you fill the water up


the other being possible breakdown in the head gasket


i could be wrong though.........

[Koi]

you have two possibilities

one being contamination when you fill the water up


the other being possible breakdown in the head gasket


i could be wrong though.........

Have you flushed the coolant out yourself or just topped up the existing stuff.
Is the film colourless?????

[Muzz67]

Not the head gasket PLEASE!!

Cooling system was flushed at local garage 4 weeks back, oily film is better described as black sludge.

[slydog]

oops

black sludge sounds like head gasket to me m8 id dran and flush it all out refill with fresh from a clean source and see if it returns if it does get the head tested for possible gasket m8

[marky]

Cooling system was flushed at local garage 4 weeks back, oily film is better described as black sludge.

Was it flushed or just drained? i flushed mine out for 1/2 hour with hose.
Lots of gunge came out it was like mud!

[Muzz67]

Have flushed again

Okay, I have flushed the system with a cooling system cleaner, and run the hose for half an hour through the heater hose. will drive for a week and see if it appears again. Thanks.