I'm a DOCTOR! not a MAGICIAN! (from one of the Star Tek movies - sorry)
Anal MB owners like myself like to use either a white dinner glove (that we put back in a hermetically sealed GladBag type of deal) or disposable surgical type temporary glove
.
"Normal" people press on the forward edge of the fuel filler door, without such precautions, to make it pop out.
If you are "semi-normal" you surreptitiously wipe the offending finger print(s) off with your choice of removal media when nobody is looking. (
)
Please take no offense at/with my humor - I'm still trying to figure out the climate control buttons and radio controls on a couple of mine!
Happy holidays!
Kevin
Crap - I need to update my profile; I now own a '79 450SEL 6.9 too/also