Originally Posted By: Bushshaker
I posted this for conversation. I don't get out much but, it's first 0W I've seen for 4-stroke application. I would think wear numbers would be good based on 0W, most wear is at start-up. I live in a part of the country where I don't consider running 40 in much of anything power sport wise. I have nothing to run this type oil in. I am curious about 0W40 though but, not necessarily Klotz.
Both Mobil 1 and Castrol make highly regarded, and much less expensive 0W/40. As far as motorcycle application is concerned, the 0W does not mean much, unless you plan to start your bike in -35C conditions. Above -15C, a 0W and a 10W are by definition in the same viscosity range.
If you are talking about using this in a motorcycle with a wet clutch, you have to be careful that the oil does not contain friction modifiers....("Energy Conserving" in the circle that defines the specs of the oil are a bad thing for wet clutches.)
Then, since the oil would also be in the shared gear box, shearing out of grade (So that your 40 weight would soon be a 30 weight) and so on, can be an important issue.
Diesel oils are popular for use in shared sump motorcycles, with wet clutches. If you want a synthetic, Rotella T6 or Delo, either in 5W/40 are excellent choices. But many would argue that the conventional versions, Rotella T5 or Delo 15W/40 would shear less, in those gear boxes.