My brother inlaw has a 2007 Astra 1.8 automatic. the ecotech engine. Temp light comes on. I checked it over and did basic tests, on the last test I took of the two top hoses to the expansion chamber and run the engine. No fluid appeared, I then give it a quick rev and we had something out of both hoses. What came out was a small amount of coffee coloured goo the texture of warm syrup. I have read on internet that the contamination could be in the gearbox area. And the engine oil is normal looking and at a constant level with no gunge at the rocker cover area. any ideas would be welcome

Les, January 2012

the cooling system on many cars can fail and coolant ends up in the transmission. I think that Vauxhall will change the rad but not the box. It will cost nothing to ask.

mags, January 2012