Yes, it flows through the head to lubricate the valve train.
You will need to consult your aftermarket manufacturer about specific requirements.
The Polaris 400 Sport can use any as a be certified motor oil. The manufacturer recommends a 10W-30 motor oil.
5 quarts, 6 with a new oil filter.
5 with a new filter.
A Pontiac G5 holds 5 quarts of motor oil. This includes a small amount of oil stored in the oil filter and the oil pan.
5
6 with a filter change.
10w30 motor oil should work nice
400/500=0.8g/cc
on a 3.5 v6 it is on the bottom of the motor.
Depends on what motor you have.
5w-30 or 10w-30.