What Motor Oil Comes Stock?

[rfabro]

I hope its not synthetic

 

[Oak Hill]

Semi Synthetic! Why?

 

[rfabro]

Synthetics impregnate the metal to make it slippery when dry and supposedly this inhibits the etching of the piston ring sidewalls where they mate with the cylinder. Supposedly, this makes it more difficult for the rings to seat completely, and I've heard from more than one reputable mechanic that you shouldn't break an engine in with them. What are the thinnest good pertro oils? I will probably break my engine in on petro and go to semi-synthetic, even though it's probably not a big deal. If Yami specs it stock it must be OK.

 

[rfabro]

Are 0 weight petro oils even blended for snowmachines specifically? Has anyone used automotive 5W30(just for break-in oil)? These are uninformed questions, but, I'm new to this sport and don't even have my first sled yet(end of month!). Does anyone remember the two letter code("reduced emmissions/improved efficiency) on automotive oils that motorcycles are to avoid?

 

[n2oiroc]

Are 0 weight petro oils even blended for snowmachines specifically? Has anyone used automotive 5W30(just for break-in oil)? These are uninformed questions, but, I'm new to this sport and don't even have my first sled yet(end of month!). Does anyone remember the two letter code("reduced emmissions/improved efficiency) on automotive oils that motorcycles are to avoid?

the apex motors do not use a clutch type starter like the rx1 did. you dont need to use a motorcycle oil. the manual states the minimum requirements and nothing about a maximum anymore. stick with a 0w30 synthetic. if you feel more comfortable with a conventional for break in then a regular automotive 5w30 will work fine.

 

[Srxspec]

The RX-1 doesn't use a clutch type starter either. All Yamaha 4-stroke snowmobiles do not use a clutch plate system, but instead they utilize a mechanical one way locking pin design.

 

[The Snow D.O.]

I'm using 5W-30 for the break-in.

 

[n2oiroc]

The RX-1 doesn't use a clutch type starter either. All Yamaha 4-stroke snowmobiles do not use a clutch plate system, but instead they utilize a mechanical one way locking pin design.

good correction. where are these guys getting the info from about the oil specs that say dont use energy conserving? my attak manual sure doesnt say it.

 

[rfabro]

Energy conserving oils are specifically prohibited for use in motorcycles because they will screw the clutch fiber plates. I know this is not an issue with sleds but the dirt bike magazines that addressed this subject made some reference to those oils being inferior in all around performance, like I shouldn't use them in my CRF even though it has seperate tranny and engine oils. I just can't remember the specifics. I don't even have an owner's manual yet, I'm just trying to get a heads-up on all the issues before I pick my sled up.