A tractor repair place might sell you a quart out of their 5 gal. pail or 55 gal. drum. Probably be cheap that way.

 

It might be hard to find someonethat will do that. Like FLEA I sold a pail to a group of 5 friends that own prairies and they split the cost. You should be able to call any Mobil oil Distributor in your area and get a pail. If you can't find one let me know and I can look it up.

 

Packardbell,

As shown in SMS069's link to the Mobilfluid 424 product datasheet, the 424 has a 10W-30 synthetic oil base with the addition of friction modifiers to help with wet brake performance. When I first got my 650 I tried to "Cheap-Out" and used synthetic 90 weight gear oil in the rear diff. I took the quad for a quick ride and #1 found that the rear diff was extremely hot, and #2 found that the rear brakes worked horribly. After that, I followed my manual to the letter and have only run the 424. Some dealers simply do not care enough to get the correct information to pass on to their customers. They do however love to take our money to provide sub par services. My recomendations are to get the manual, read this forum, and do as much of the work on your Prairie that you can yourself!

Regards,
ED

 

Cross reference list.

Mobil------Mobilfluid 423 or 424
Atlantic---Hy Trans
BP---------Tractran TF10
Castrol----Agricastrol AS or TFD
Caltrex----RPM Tractor Hyd Fluid
Shell------Donax TT or Donax TD
Valvoline--Trantrac Fluid
Ampol------Super Transaulic

Got these all off the net. Never even heard of a couple of them.

 

I don't believe that the 424 is a synthetic and the reason it got so hot was because of the braking without the correct additive package and the Higher viscosity.

 

Without a doubt you would think the Dealers would know what to use for the rear dif on the Prairie 650 & by stating to use 80/90 weight oil, believe it or not, is not wrong!
According to your owners manual it states this: Mobile Fluid 424, Citgo Transgard Tractor Hydraulic Fliud. Doesn't say anything about 80/90 weight oil BUT where it does say the 80 & 90 weight oil for the rear dif is on Kawasakis Vehicle Information Specs found on the Kawasaki web page.
Here it reads:
Mobile Fluid 424,
when above 5c (41F) SAE 90,
when below 5c (41F) SAE 80.
Without a doubt, this is why some of the K dealers are using 80/90 weight oil in the rear dif!
This same VI page does state to use Engine oil ONLY in the front dif.
I found this information interesting & wanted to pass it along. For myself, I'll stick with the Mobil 424 Fluid, since the Dealers here carry it in the quart bottles.

 

i called the dealer and he said that he will swap oil but didnt admit he was wrong.
should i flush the rear diff out with some different oil before putting this in or should i be fine with just putting in the right oil.
what about when i drain it will it be too thick to drain or will it be fine?

 

I personaly would drain it , fill it with the 424 run it for a bit drain it and then refill.

 

is it really necessary

 

the one thing that concerns me, is now that you have run the 80/90 in your quad ,will the braking be affected? I would flush it with mineral spirts or stoddard solvent, witch ever you find , its also sold as enamel reducer for about $2 bucks a gallon, it won't hurt the clutches in your rear end and it will get out the residue from the 80/90, I would fill the diff, and rotate by hand for about 5 minutes, then drain. it should get the majority of it out and make it safe to run the fresh fluid.[img]i/expressions/face-icon-small-cool.gif[/img]