What engine oil do you use in a 04 raptor 660??

 

I believe it calls for Yamalube 10w30.....I use Amsoil 0w40 in my Raptor. Basically you can use any oil you want as long as it is wet clutch compatible.

 

ive always used GN$ honda 10w40 in all my yamahas as well - JT

 

I dont have a Raptor, but i use Amsoil 0-40 synthetic in my quad also, and would highly reccomend it

 

I also use amsoil 0w40

 

Personally, i would not recommend 0w40 in anything that did not call for that in your manual or by the dealer. A 0w40 oil is a multigrade oil meaning when you start your atv your oil is like a 0 weight oil, SUPER light, almost no protection. And when your atv is at normal running temps it acts as a 40 weight oil, which is perfectly fine. The start up is what would worry me about 0w40. I recommend a 20w50 or at the very lease 10w40. And i think your yamaha dealer would tell you the same. Just make sure you get a oil that is made for motorcycles or atvs, because the oil you put in a vehicle has friction modifiers in them for better gas milage and since your atvs engine oil is the same as the trans oil a friction modified oil can cause your clutch to slip over time. In other words, get a oil that is for a wet clutch. I recommend, for a raptor 660 klotz synthetic 20w50 techniplate, which is about $10 bucks a qt. Or if you want something cheaper. Valvoline makes a 10w40 atv oil, and a 20w50 motorcycle oil, both would work just fine. I would go with the 20w50 for best protection.

 

I have always used 20w40 Yamalube, and always had good luck with it, but here in Wisconsin, when it gets to 20 below, the starter wont even turn over the motor, so i run yamalube winter formula 5w40, and seem to have good luck so far with that.

 

I'm sure if you took a poll, there are more people using Amsoil 0w40 than any other oil in there quads, and I'm willing to bet that there is no one that has had a problem that could be linked back to that oil. I know that everyone has an opinion as to what oils are the best but I think there is good reason for it being so popular.

 

My old 14 year old fourtrax has god knows how many miles, and runs like new still, with amsoil 0-40 oil. The oil gets up into the motor just fine, in ALL temperatures upon startup

 

correct me if i'm wrong... but 0 would be thick and 50 would be thin...

ssoo wtf are you talking about.. no protection cause it's to thin... you're a moron