This site started with the incredibly popular chain driven VT750DC Shadow Spirit motorcycle, however, it is expanding to include many of the popular VT750 models. Because Honda has utilized similar technology for all of its shadow 750 models much of the information on this site can be applied across VT750 models. SOURCE: how much oil does a 2004 honda shadow aero 750 it takes between 3-4 quarts but that model has a dip stick on the oil cap so use it to check as you fill,also make sure to only use motorcycle oil,car oils break down to fast and were not designed for motorcycle use, honda makes a very good oil, i would use a 10w-40 for cold weather and 20w-50 for hot weather,also i would suggest a t1qRM.