yes that is mold, but it cleaned right off, you should see it now. after pictures coming after i do some interior modifications
first thing done was fixing the leak in the rear, the lil bucket was full over stagnant water when i went to get the car. Lucky i knew exacly where it was coming from.
Removed tail lights and cleaned up behind them, removed old butyl rubber sealent, cleaned, applied new 3M butyl rubber and put back on! looks perfect.
before

after cleaning

tail light with new rubber

going to make use of these
first 10 miles of driving and i get a CEL, wouldn't be an audi if it didn't give me one of those

choosing the best and putting them back together

got my first cel after 10 miles of driving, it's christened!
