Hello Motor-Talk-Gemeinde, since one month I am proud owner of an Audi 80 GL, 1.8 L carburetor engine 66 kW without cat, from 1983. Practically no rust, engine runs well. You don’t notice his age 😉 Of course some questions appear gradually. Maybe you can answer one or the other. 1) Which fuel? Somehow I remember that I saw a picker with “Super Plus” during the test drive. Because at the petrol stations with us in the environment no Super Plus at all, but only this 100 octan, I have filled this last time. However, because this goes strong in the wallet, I wanted to ask if really Super Plus is proposed. At that time the fuel will not have been so good or? 2) Lead replacement According to the previous owner and his brother (17 years owner of this car, Audi 80/90-Freak) give in every third tank filling lead replacement. Does this fit like this? 3) “Knirschen” the switch on the amatur board First there I would say that the tacho would “whistle/knirschen”. Today, however, I noticed that it is the switches on the left (especially the light switch). Can you do something about it? Thank you for your efforts, (there will certainly be more questions 😉 mfg Mitch!