My buddy bought a 04 raptor 660 and we think the clutch is slippin. It just dont have the power that mine has. When you gas it it just seems like it spins in there for a second. I know the guy he bought it from and me and him think that the clutch is slippin and may be time for a new one. he runs synthetic oil in it though. I hear on here that synthetic makes clutches slip. But the oil he is running is the amsoil synthetic. I read on here that the amsoil synthetic isnt bad though. My question is do we switch it back to yamalube, or its time for a new clutch.
But really my friend got an awsome deal. He got a 04 limited edition Raptor, for 3000 bucks, and it has full Alien pipe, k&n, and jetted right. I think thats a pretty good price. well let me know what yall think on the oil and clutch and all that. thanks for all the help

 

there's a versino of Amsoil synthetic in a 10w40 and 20w50 versino that is specific for motorcycles and is wet clutch compatible... if he got regular car oil .. that would cause it..

 

ya its the 20w50 one he uses, so does this mean its time for a new clutch?

 

it may be... i would suggest getting all ( or mostly all of it) of the oi lthat's in there OUT and putting fresh oil in along with a new clutch.. cause you never know.. it may just need one( dought it but u never know..)

 

20-50 seems a little thick, I'd try 10-40 keep in mind once you go synthetic you can'tgo back.................I think.

 

no, you're right.. once you go synthetic.. you can't go back..

 

just wondering why you cant switch back? thanks

 

Im curious also, because Ive done it a few times and nothing bad happened.

 

Amsoil makes a specific synthetic oil for ATV's w/ wet clutch systems. I recently used it to change my oil and haven't had any problems. Less smoke during cold starts too.....great oil. As mentioned earlier, be very carefuul when using automobile synthetic oils, some have additives that are not compatible with wet clutch systems.

Smuznu

 

So im using the amsoil 20w50 made for atvs. So i cant switch back to non senthetic? So does this mean the only thing to do is get a new clutch?