Polaris ATV Legend
Join Date: Feb 2009
Location: Washington State
JCain, i can answer both of these questions for you....
Before the time of the XP, polaris had just their AGL tranny fluid. When the XP's first rolled out, they need a special kind of oil, so polaris just quickly made and bottled the XP transmission oil. They have sense worked on the AGL formula and have re-engineered the fluid to include the needs of the XP, and now call this new fluid AGL Plus. So you dont need the XP tranny fluid if you have AGL Plus tranny fluid, but if you had an old bottle of just AGL, you would not want to use that.
You dont need the U-Joint grease unless you are changing out a boot, and in that case, when you get the boot kit, it will come with a packet of pre-measured grease to put inside the boot on the U-joint. The all season grease is going to be the grease most commonly used on your machine, and go ahead and hit every zerk you can find with the all season grease. there are no zerks for the u-joint grease.
Hope i explained that well enough. Good questions!