Should be just a little over 4 L. With the filter. With bike on the center stand, oil in, run the engine a few minutes, and with a flash lite look in the little window, at the same time shut the engine down and you will see the level very clearly as the oil settles.
9.8 ounces
dot 3 or 4
Yes, it is. However, there is separate gear oil in the final drive of the Goldwing, as it is shaft driven.
The oil drain plug is on the front of the motor below the oil filter.
I use Motul 10w40. Check with your local dealer.
9.8 ounces
3.9 quarts.
yes and no, it has a glass indicator window but no dip stick
3 1/2 quarts. There is a sight glass on the lower right side that shows the oil fullness.
3.9 US Quarts
With the filter changed 3.5 liters will do.
Should be around 3.2 Liters, if the same as the 1200's.