Idon't know about a 1995 Polaris 300 Sportsman, but I have a 2008 Polaris 300 Sportsman and the main particular oil I use for mine is Polaris brand oil. If your not satisfied with my answer, call your Polaris Company.
2 quarts.
Yes, as long as you use the correct SAE weight oil. Polaris oil is regular oil.
100 cm
Polaris four stroke oil is a 0-40w synthetic.
2 quarts of oil and I am waiting to find out if 5w-50 is a must for polaris.
you would use polaris specified AGL fluid in the transmission
Polaris has its brand of hub oil , which is not cheap . Ford ATF :automatic transmission fluid is recommended if you do not want to pay for Polaris oil .
Bad float valve in carb
behind the left front tire
2 QT. CAP. ON POLARIS 700 TWIN 0W-40 SYNTHETIC
Most 91 polaris 400's are 2-stroke , and there is an oil tank in the front . Make sure the oil is 2-stroke oil for injection .