5W30
Should be somewhere around 4 quarts.
When changing the oil AND filter, the 2004 XL7 takes six quarts of 5W-30 engine oil.
To change the CVT gear oil in Suzuki Swift, you need a 4L can for your car.
Obviously, like other motorcycles Suzuki requires maintenance as well, change oil filter as well on every engine oil change.
No you only change the filter when you change the oil.
I ride a Suzuki M50 BLVD and their is no oil reset button. I do not know about the Suzuki C50 BLVD.
4.4L with filter
5w 30
The Suzuki C90 (aka VL1500 or Boulevard C90) oil change [from manual]: Oil change only: 3.9 qt Oil & Filter change: 4.5 qt Completely dry: 5.3 qt
Yes, you should change it.
Remove the Suzuki 450 oil pan plug. Allow the oil to drain out of the oil pan. Replace the plug to the oil pan. Fill the motor with oil.