Just got back from a month in Beijing, joined a startup there and will spend lots of time away from home in 2018.

While I was there the 999 miles message came up and the wife got 2 jugs from VAG, 2.5 Gallons each. I usually just put 2.5 Gallons and then let it run down to the warning but understandably wife does not want it to come on too soon.

As to filling it up today, wondered about max fill volume. I found this claim on a forum: 1.6 gallons for the active tank and 4.5 gallons for the passive tank. This roughly coincides with my memory of reading up when I had problems with the active tank. Is this correct?

I bought the MB fill tube some time back and it works well but I'd hate to get stuck with the fill tube on and still have liquid on in it while the tank is already full.

BTW, Searching for a newer 35d (14 and up) but seems the ones I like with the M package are mostly white and I prefer black or space gray.

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2003 4.4i black ext./black int./black headliner (kid's runabout)
2014 535d X-drive, M package, silver/black interior

Sold but not forgotten:
2009 E70 35d, black ext./black int./black headliner (sold 2021)
2006 4.8iS Le Mans blue/cream int./black headliner, SOLD in 2012 sadly...

Other hardware:
2015 Cayenne S (wife's new DD and definitely wroooommmmm)
2016 Tundra 1794 edition crew cab, luxo hauler
2005 Tundra crew cab, weekend hauler. Sold after 150k very happy miles.