hello people, theme 1: black engine oil at 20,000 km service had changed with my panda 1.2 60 ps, gasoline, bj 2005, 60,000 km, timing belts u wp not yet changed!, (1/3 city + 2/3 highway rides), after the last service (40.000km) had an oil change again. the air filter was also not really dirty. the mechanic noticed that the motor oil (5w30 from the fiat service workshop) was completely black and looked like a thick soup. for the mechanic the k omic. from my own experience I know that the old motor oil is rather black to dark brown in diesel vehicles, but with the petrol panda it should be more normal-brown or? question: is it normal that the motor oil after 20,000 km is completely black in the petrol panda? topic 2: increased cooling liquid consumption since the summer I had to refill two times a little cool liquid (red liquid) since the coolant level slipped under the min limit. in the garage I found no e drip tracks or similar, which would close to an obvious leak. also I noticed no changes in the driving behaviour of the panda. maybe now in the winter the cold motor blows out a little more white smoke in the morning while exhausting. but not somehow noticeable. except in the garage the exhaust smells a little more than before. every now and then it knocks something in the engine room (in empty run), when the car is cold at the start. but it disappears again, when it is warm. then si and the quiet knock/knatter sounds in the empty run also away. question: can the coolant loss point to a later error in the motor? can the coolant loss somehow be related to the completely black motor oil? I thank you very much for your inputs and stay with nice greetings fuzzypeppi