Chevrolet Epica 2.0 Built 2009 without retrofitting E85

Hello! Can anyone give me information about whether it is dangerous to mix ethanol with the above mentioned vehicle? Just under 5 tkm have been travelled so far. Are there already many deposits in the tank, which are washed out by ethanol and can clog the injection nozzles? Can I just try an E85 admixture with increasing proportions? Starting e.g. with 20% E85 and 80% super spirit and then if no negative effects show up, can I also add more? K then I expect that the mixture becomes leaner and thus the efficiency increases or do I have to assume that the Lambda control compensates for this by additional injected quantities? Can problems arise with this type of certain components such as hoses, valves etc.?