I done the breakin service on my 650 this past weekend. I called no less than 15 places looking for that mystery Mobilfluid424. I called the dealer where I bought it and he said to run just any good 80w oil in the rear and I said see ya later. I went to the other dealer on the other side of and asked him. They had just gotten the Kawachem gear and wet brake fluid in just for the 650, so I used that in the front and rear and I could tell a little difference in the sound and the way the rear brakes worked. There was less clicking sound going downhill with the throttle closed, as a matter of fact I din't hear that clicking sound at all and the brakes worked smoother than before. I also put the hitch on. Wouldn't the 650 sound good with one of those pipes that have two going in and two holes in the end cap?.

 

Hey, you are not supposed to put the mobil 424 in the front diff. I do not know what it would hurt, other than cost more.

 

The dealer said that he would recommend the same oil in the front as the rear, it is the same weight as engine oil. It does cost more, but the front only holds .45 of a quart. I like to run the same oil in the front and rear. I guess it just depends on personal preference. As long as you get the right oil in the rear (10w-30 gear and wet brake oil) it should be ok. It seems to run just fine so far.

 

I put 20w-50 in the front because the manual says I can, and I felt it would stiffen up the diff locking system just a bit.

 

trailhog, read your owners manual for a change instead of the idiot dealers....the front diff takes the same oil as the engine, and the rear takes kawachem/424....

 

Yeh bro, don't listen to the dealers... most of the time they do not have a clue what they're talking about. Read the owner's manual and just follow what it says. It states to use the same oil in the front differential as you use in the engine. Then use the kawachem gear/wet brake or mobil 424 equivalent in the rear differential.

I just go by what the manual says.. [img]i/expressions/face-icon-small-smile.gif[/img]

 

I smell burt pressure plates!!!

 

I can't see why you shouldn't run the Kawchem in the front diff. The front diff lock system uses the same type of friction plates that the rear wet braking system uses. What could it hurt beside your pocketbook?

 

As a matter of fact, you can use the Kawchem or 424 in the front diff, I did and rode a mile down the trail, turned around and came home and drained it, It made the steering, so stiff i couldn't stand it even in regular 4X4 it felt like I had the lever locked, the reason i found out was, it has NO additives at all to allow the clutch plates to slip a little, so when you use the rear brake, you notice it will lock up real easy, same with the front end, the clutch's were not slipping at all, made it like diff lock all the time, that's why you here people say don't use " energy conserving" oils in a atv with a wet clutch, as it will allow them to slip a little, well for easy steering, you want this for your front diff, I put Castrol 10w-30 in the front diff, which by the way meets the API spec and viscosity spec in the manual,and it steer's like a two wheel drive now even in 4X4, I may switch to synthetic next time I change and see if if makes it even easier. I don't worry about the 10w-30 being to thin as I change my oil and both diff'd about every 400-500 miles.....

 

Stakk, thanks for the heads up. I didn't know about the "no additives" in the Kawchem.