Right -
Morning all, Oil:
Right - KTM - Spec is for an SG 10W40 so most mineral bike oils will meet this spec, however, KTM do recommend using a fully synthetic, such as Castrol R4 racingbike ( KTM recommend a Shell alternative Advance Ultra 4 ) maybe because of the small sump size, but more than likely because KTM have a contract with Shell ( cynical... me ? )
To recap -
Honda recommend SF/SG 10W40 and is essential under warranty
Kawasaki recommend SF/SG 10W40, although 10W50, 20W50 is also acceptable ( what you like there then ! )
Yamaha - SE 10W40, again other oil grades are acceptable for different ambient temperatures.
Suzuki - SF/SG 10W40, but seems that this is the thinnest recommendation.
Only manufacturer I know of who insists on Semi / Fully syn are Triumph, Cagiva ( in the W12 and W16 ) CCM recommend Mobil 1 Racing 4T ( this is a 15W50 ) or fully or part synthetic oils 15W50 or 20W50.... That blows your Universal Tractor oil out of the water
Regarding this stuff (UTTO), not sure what the anti sqwawk additive for the wet brakes will have on your clutch, also, to meet the spec for a transmission and hydraulic oil, these tend to be normally around 10W30, and even if your's is a 10W40, it's still below the viscosoty that CCM recommend. Over a long period, the lubrication provided will be less so wear will be more. Also bear in mind that the reason some of the "back street" blenders can knock out oil cheaper is that they use cheaper quality base oils.
At the end of the day - oil is cheap, engine components are not.
What do you do, use the proper oil and pay a few quid more, or use a cheaper oil and save a few quid, but pay miore in the long term when your engine fails ?
I'm off to the bike show tomorrow ( anyone else ? ) and I'll be looking for some fun. If you see one of those stand selling "wonder additive", wait until they have a few punters and ask these questions :
What is your additive composed of and what will it do to the balanced package of additives in the oil?
Which Major oil manufacturer endorses, or actually recommends the use of their product ?
Ask them if ANYONE recommends the use of their product?
If they have one of those gadgets that seizes a bearing, but doesn't when the add their wonder additive - ask them " isn't that what EP additive is supposed to do ?
Look to see if it says "shake contents before adding" if it does, then it's more than likely a suspension, ask them what happens when this gets to the filter ( the filter takes it out and it blocks the filter ?? )
I'm sure you can think of others....
Owner of the most immaculate motorcycles since 1979 .... 
