Hello Together Drive an Opel Omega 2.6 Bauj:2001 Km 162000 bought by a retired born 1930 top maintained, not smoker, gapless book maintained with full equipment except city heating. I immediately fell in love with the vehicle,only I now have a problem! Have noticed in the cooling water oil a caramel-colored thickness liquid. But keeps the cooling water temperature as nailed and no water in the oil. Smoke about a 1/4 liter oil at 1000 km.The vehicle was at m but never too hot that the ZKD could have given up the eaten. (Bin since the purchase 20000) I only read here in the forum and then pushed on it that it could be the oil cooler. Have the oil cooler now expanded (Habe 1985 on Peugeot learned, ewig her and already 20 years from the occupation) but could not have fixed any fault or hole in the oil cooler. Build the vehicle only at the weekend with a new oil cooler together. Have the oil cooler learned now (Habe 1985 on Peugeot, and already 20 years ago I used it as well as well as I can not have a stomach pain in the city. But now I can not have a good taste.