You need to take the passenger side wheel off, then their is a cover with three small metric nuts about 2" wide, remove them and filter slides out.
4 quarts according to Suzuki shop for 1995 250 quadrunner
remove the drain plug between the exhaust under the motor
on my 1985 LT250-EFF quadrunner's engine its printed 10W-40 1600mL which is just under 2 US Quarts.
The stick is located on the right hand side of the engine towards the back. It looks like the plug of most lawn movers. Some models however has an glass inspektion hole situated on any side of the...