I've heard good things about the Puralator oil filter......I use that and Mobil 1 0W-40 synthetic.....The only Polaris fluid I use is the Demand Drive Fluid for the front gearcase just because sometimes the engagement of the FWD is a little particular.......
John

 

I use 0w40 Mobil 1 only ($5.49). Especially in the winter.
No need for special 4 stroke (wet clutch ) high priced oil here.

-600/700 twins oil filter-Polaris #2540006

http://www.wixfilters.com/filterlookup/atv.asp

WIX p/n 51357
NAPA 1357
STP S6607
Amsoil P502057
=================
-500 HO 4 stroke oil filter-Polaris #
Wix 51356
Purulator 14610
AC Delco PF 2057
-----------------
Pure One L 14610
Champion ST 7317
Fram PH 7317 or TG7317
Napa 1356

P 14610 crosses to a AC Delco PF 2057, much better filter for $3.69.
the AC has a anti drain back and relief valve.

you have to watch for, is does it have a backflow on it?
In other words, when you shut off the bike with a Polaris filter (and some other filter's) the oil stays in the filter.
But with the Fram filter the oil drains out of the filter when you shut it off.
I don't know what the Purulator does??
----------------------------------------------------
NOW they finally changed the Powersports and Motorcycle Application Guide, and list a NEW filter number for the twins. P502057

 

the p14610 twin, p14612 single, all have the relief and anti drainback valves, also are at or near the top on oil filter comparison tests....

 

I know I didnt start the question ,but I sure learned alot

 

Where do you get the Purolator filters ?

 

Oil Filter Test

 

Anyone have the WIX OR Mobile 1 oil filter part numbers ?

 

Wix # 51357

 

This should help WIX ATV oil filter guide

 

WGMARQ............
Advance Auto Parts has the puralators.
John