I look at the back of my 2001 SP500, all I see is the one yellow dipstick. It looks like the rear diff and tranny is all in one unit to me. When I do a search here it seem the rear diff and tranny take two different fluids. Whats fluid does the Yellow dip stick check,the rear diff or tranny? and how do you check the remaining one?

 

A dip stick is for your engine oil, or tranny. You check the diff by a threaded nut in the differential, i believe.

 

I think I need a Polaris guy on this one. My dipstick for the oil is located on the front left side on the oil tank fill cap. I have the front diff figured out also,but the big back block with the yellow dip stick on the rear end seems to be one unit. The back axles come out of it and the shift linkages also go to it.[img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-confused.gif[/img]

 

If you have a Sportsman the yellow dip stick on the right side if for your gear case. The gear case consists of your trans and the rear wheel drive.

It is all the same fluid. It holds one qt.

 

What kind of oil do I put in it? I did not get a manual with this ATV as of yet.[img]i/expressions/face-icon-small-blush.gif[/img]

 

Polaris AGL is what you need, the twins use separate trans/diff requiring two different lubes.

 

No Walmart to the rescue stuff out there? Oh well ,thanks for the info. Can this Polaris AGL atleast go in the front diff also?[img]i/expressions/face-icon-small-frown.gif[/img]

 

No do not use AGL in the front diff, I think your locking hubs are still at the wheels on your 01 so if that is the case you need front gearcase lube which may be named angle drive fluid also from Polaris...

 

A good synthetic motor oil works fine in the rear of the Sportsman.

I use Castrol Syntec 5w50.

 

book calls for GL5 (80w90)
that motor oil is kinda thin for the rear diff, IMO