Hi I know from reading some material that came with my bike that fully synthetic oil is a bit of a problem as can lead to clutch slip . does anyone have advice on either semi synthetic or mineral oil in which is best
colin

 

It's ok to use fully synthetic oil in your bike. When choosing a brand of oil, either stick with motorcycle specific oil, or choose a brand that has no energy conserving additives or properties. This can be found by looking on the bottle at the API label. If it has energy conserving on it, it is not good to use in your engine as it will make the clutch slip as most motorcycle clutches are wet clutches, meaning the oil lubricates the clutch as well as other internal parts. Basically, look at the bottle (usually on the back) and see if has a label like the one below. If so, choose another brand.



Link to pic of label:
http://en.wikipedia.org/wiki/File:Energyconserving.JPG

 

many thanks for that

 

&

Watch out for "high efficiency" or "energy conserving" ones as more often than
not they have friction modifiers added ..which ABSOLUTELY make wet clutches
slip.

Least that's how it goes here in the good ole USA

 

As a rule of thumb, oil with a 10w-40 or heavier viscosity will not have the "energy conserving" API seal.

 

Napa 15/50 synth is the only one I've seen with it Jim (energy conserving)

But

You are right for the most part it's true

 

Figures, I switch to synth (Rotella in the blue bottle) and now have a small dribble coming out somewhere around my shifter. Switching back to mineral oil today

 

Bummer Mal, yep I plan on keeping the Dino in there myself.

My 90 weeps a tick too ....just enough to have some grime stick to it
must check the other one ........no big deal I'd say really prolly
the seals gone a bit hard

Sticking with that 2 1/2 gals of Rotella white bottle 15/40

Safe trip man ........ dayum wish I was going ......shoot

 

Just a slight update: 2 full days of riding and no drops by the kickstand