DEF (Urea) for 335d
I haven't had to do this yet, but I did ask the dealer when I bought it how to DIY the refill. My notes at this point are skimpy, but what I noted was that I should push in the little panel bear the left rear wheel and fill the top reservoir. There is a top and bottom reservoir opening. What I am wishing to confirm is whether you fill both reservoirs in some sequence, or just the top, or just the bottom?
Mods-Etc: Quaife LSD w/VAC finned diff cover, M3 Rear SF Bushings, M3 sways & OEM Susp Front/Rear Cmpnt Kits ('cept strut brace), GC Caster/Camber Plates, AC Schnitzer M3 Sport Springs, JRZ RS1 dampers, JBD 100%, Goodrich SS brake lines, non-stggrd APEX ARC-8 18" wheels with Michelin PSS tires (winter OEM 17" wheels and Blizzak LM-25).