Susie,
There are no dumb questions, only intolerant answers

Feel free to ask whatever you want as you are now family
If you look under the car and see a catalytic converter like shown in the pictures then the car was designed to run on unleaded gasoline. I do not think that unleaded was required in Germany until 1993 so any car older would probably not have the emissions equipment but should still run on unleaded gas with no issues.
Let us know how you are doing in Cyprus. I hear it is beautiful on the island.
__________________
"I have no convictions ... I blow with the wind, and the prevailing wind happens to be from Vichy"
Current
Monika '74 450 SL
BrownHilda '79 280SL
FoxyCleopatra '99 Chevy Suburban
Scarlett 2014 Jeep Cherokee
Krystal 2004 Volvo S60
Gone
'74 Jeep CJ5
'97 Jeep ZJ Laredo
Rudolf ‘86 300SDL
Bruno '81 300SD
Fritzi '84 BMW
'92 Subaru
'96 Impala SS
'71 Buick GS conv
'67 GTO conv
'63 Corvair conv
'57 Nomad