oil in radiator

[gingerpickle]

traces of oil in radiator, no trace of water in engine oil and transmission oil. any ideas?

[Skeletorxu6]

hey mate i had the same problem was in the water but no where else we changed the Radiator and it did a couple of flushes and seems to have fixed it. But a few questions is it the V6 ecotec engine or a V8? if its the V6 cheapest thing u can do is a new radiator, but if it dosnt fix it then it looks like it may be a f@#ked manifold gasket really dont think its the head Gaskets because the oil and water jackets arnt really close so it may be the vally or manifold but do the radiator first b4 u jump straight in to pulling the motor apart and spending around $2000 that might not fix it also is it motor oil or Trans fluid?

Cheers, Daniel

[blacknight]

If you have access to a trained mechanic, take a look at the transmission cooling lines headed into the radiator. check your transmission oil as well. Usually doing a complete flush will solve the issue, and its an alternative instead of tearing up the engine

[Killr6]

its either a trans fluid leak, or a busted inlet manifold gasket.

[c2105026]

Contaminated coolant - the slightest drop of oil on the vessel that was used to fill up the radiator etc. will cause some specks. Had exact same issue on the VB; flushed coolant, filled it up, oil slick; remembered my hands were greasy from the just-done oil change. Monitor for any strange noises, billowing clouds of white smoke; check the radiator cap with the engine warm and running - no bubbles=ok head gasket.

[pablo]

Not 'rocket science', if it's a reddish colour it's auto trans oil. If it's grey/black, it's engine oil, more than likely leaking through the inlet manifold gasket into the water jacket,.......... common occurence unfortunately.

[gingerpickle]

its a v6 ecotec and thanks for your feedback ill keep you posted