You are right on all counts.
The update performed was a requirement as per M-B.
I can see why ( after your great explanation ).
Yes, the fuelfiller door specifies E 85 could be used.
Based on what I know about the fuel, I'm just not a " Tree Huger " extrordinaire, to be ever using that junk.
Anybody that does some thorough research on this " Alternative " ( and I use the term while biting my tongue )would have to come to the conclusion that it is nothing more than " Smoke & Mirrors ".
Geee, they had cold
start problems with this stuff in
Brazil.
