Use a metric size 16 open end wrench rotate to left 1 and 1/2 turns and take cap off .
Yes
No.
No
Righty tighty, lefty loosey.
1500-1500, yes
Yes
nono
No
Depends on which fuel/water separator you have. If you have a Davco primary filter, look underneath the housing... there'll be an "L" shaped plastic knob... rotate it downwards to open the draincock. If you have a primary fuel filter with a snap-on plastic cap underneath it, there'll be a draincock on the bottom of it... rotate it counterclockwise (looking at it from the bottom) to open the draincock. Remember to leave the key in the "OFF" position as you do this (or just take it out of the ignition).
The radiator drain is turned counter clockwise to loosen.
No.
No it will not.