e30 leaker
 

The tail lights let rain into the trunk. When the bulb holder is removed there was water inside. Carefully re-fitting the gasket helped but eventually I just put a small line of dark caulk across the top of the lens.

Other leak in the engine bay is caused by a gap in the fender to body connection and is seen when the rubber molding is removed. Judicious caulking there also has kept out the rain. I lost my '02 to rust and my e21 also, hopefully the e30's will last.

That is the blinker fluid you have heard about. They sell refills at the parts store. Go in and ask for it. Gallon jugs are cheaper.