Is this oil OK to use in my '09 KLX250??
#16
Dude Larry! That is awesome!!! Looks like the dichotomous key I use to repair the furnaces up here at work. Good stuff man....and probably true.
#17
Your right, but you can NEVER go wrong with using what the manual says. Any company does countless hours of testing on oils for engines they produce and under normal conditions it tells you what to use.
#19
Been there many times myself, and my girlfriend always says didn't you learn your lesson last time you didn't read the instuctions!
#20
Ever since Castrol's winning lawsuit against Mobil 1 regarding using the term "synthetic" to describe severely hydrocracked Group III oil, it has changed the term from a scientific term to a marketing term. MOST "synthetics" are not truly man-made molecules anymore. They are simply highly refined Petroleum. Don't wring your hands about that, though, because Group III oils perform within a gnat's eyelash of true man-made base molecules, at a fraction of the price. Don't worry about mixing anymore...unless you have some 20+ year old TRULY synthetic oil laying around...in which case I'd donate it to the local oil collection tank.
Also, you don't have to worry about friction modifiers hurting your wet clutch plates if you use a 15w-40, 15w-50, or 20w-50. Unless someone can point out an exception, I've NEVER seen any of these oils with an "Energy Conserving" label...that label denotes some friction modifier additives that could potentially mess with the clutch pack...ALTHOUGH, I've known many people that have used Energy Conserving oils in wet clutches, and they didn't have problems. I'd avoid them, though...they tend to be too thin for most motorcycle uses anyway.
Also, you don't have to worry about friction modifiers hurting your wet clutch plates if you use a 15w-40, 15w-50, or 20w-50. Unless someone can point out an exception, I've NEVER seen any of these oils with an "Energy Conserving" label...that label denotes some friction modifier additives that could potentially mess with the clutch pack...ALTHOUGH, I've known many people that have used Energy Conserving oils in wet clutches, and they didn't have problems. I'd avoid them, though...they tend to be too thin for most motorcycle uses anyway.