My friend is always using Castrol in his 350 Warrior,and laughs everytime i pay a little extra for Honda oil.Only because i read in owners manual that anything but honda oil will hurt the transmission because of some additive needed by it to function properly.Waht do you think guys is Honda/Yamaha just pushing their overpriced oil or can you just put any ole brand in your crankcase.

Thanks
Wild

 

search for "oil" this topic is beat to death.

 

We have gone over this oil thing a thousand times. See this post, specifically about the Rancher------- http://forums.atvconnection.com/mess...did/444212.cfm

What is Rn4??? There is a Honda GN4 (dino), HP4 (synth blend), and HP4M (synth blend with moly). Pick a motorcycle specific oil that is API SG/JASO MA (the JASO MA means it is fine for your transmission). Given that, you can run anything: dino, blend, or full synthetic (but not HP4M). (Note that Honda oils and Yamalube are now API SJ and no longer API SG, so I have stopped using them!) http://www.thumperfaq.com/oil.htm

By no means are all oils created equal! I personally like the ester synthetics (Maxima Extra for the Rancher). THE SYNTHETICS ARE MORE EXPENSIVE BECAUSE THEY ARE DESIGNER LUBRICANTS, NOT JUST SOMETHING THAT GOT PUMPED OUT OF THE GROUND! Why whine about spending a couple of dollars more on a top of the line oil??? Your bike cost you a bundle, isn't it worth it??? http://www.maximausa.com/technical/l...beNews2002.pdf

Which Castrol is he using? One of the car oils?

 

I meant GN4(so sorry).Thanks for the info,its very detailed.I'm new to this and did not want to make mistakes when it come to oil.My buddy runs regular car Castrol in his Warrior 350 and its an manual shift bike.Oh yea guess i over looked the search engine at the top of page i guess.But thank you for the sound advice.

Wild

 

Print out the Thumperfaq article (it's actually a reprint from Motocross Action) and give it to your buddy who likes "car oil".