Motor Oil

[EvilTwin]

Yes Great Horned One (aka ODR) 'tis sweet irony, seperated at birth, only reunited now after all these years. Finally, I have someone I can relate too (about 18inch trousercondas of course). Tell me how do you keep yours from getting caught in your wheels when you ride?

[EvilTwin]

Those duders at amsoil must have a lot of ostridge farms.

[Georgecls]

Yes, 50W is fine for John Deere Tractors, but not so fine for our engines... But that is from a lube engineer's perspective......... We want to optimize viscosity for the RPM's the engine will be seeing.. Remember, our engines are NOT V-twins as defined by Harley Davidson but much higher revving, higher performance in every respect, with very different lubrication needs.
George Morrison, STLE CLS

[Georgecls]

And yes, you've discussed oil a coupla times but not with me...........:-)
George

[ducpainter]

Originally Posted by Georgecls

Yes, 50W is fine for John Deere Tractors, but not so fine for our engines... But that is from a lube engineer's perspective......... We want to optimize viscosity for the RPM's the engine will be seeing.. Remember, our engines are NOT V-twins...
George Morrison, STLE CLS

If our engines are not V-twins, they are certainly L-twins. In the perspective of a lube engineer what is high rpm?

[philb]

Originally Posted by Georgecls

Remember, our engines are NOT V-twins...*

Yes they are. It's two-cylinders, in a 90º vee; that makes it a V-twin.

The whole oil controversy is overrated and overthought. Get any decent quality synthetic or semi-synthetic that is formulated for motorcycle use, in the weight your manual recommends. Change it regularly (about 3-4000 miles), and the filter every second oil change, and don't fret about it.

philb

[BCT_Dark]

Originally Posted by Georgecls

Yes, 50W is fine for John Deere Tractors, but not so fine for our engines...* But that is from a lube engineer's perspective.........* We want to optimize viscosity for the RPM's the engine will be seeing..* *Remember, our engines are NOT V-twins...*
George Morrison, STLE CLS

So, do you have any advise?

[Rickoz]

Originally Posted by Raider

Here is some links:
http://www.ducatimonster.org/faq/faq_oil.html
http://www.ducatimonster.org/faq/faq_oil_survey.html
If you use the topic search you'll find a ton of threads on what oil to use.

Thanks great reading [thumbsup]

Originally Posted by Georgecls

Yes, 50W is fine for John Deere Tractors, but not so fine for our engines...* But that is from a lube engineer's perspective.........*
George Morrison, STLE CLS

Nobody suggested using a monograde oil though George?

[Georgecls]

Re: 50W.. No, we are never talking single grades anymore, just lazy typing on my part. Should have been more exacting in saying a 15W-50 ot 20W-50 but both oils ARE true 50 weight oils at engine operating temperatures. Slipped into engineering talk of operational viscosities...
My reference that our Ducati engines are not V-twins (L-Twin) was tongue in cheek, moreover with the intent of differentiation that our engines are NOT of the HD, Yamaha cruiser, etc. ilk.. Our engines are high speed engines optimized for XXW-40 visosities, vs the slower turning HD V-twin (and of course John Deere Tractors of old) need the XXW-50 viscosity..
As a lube engineering concept, the faster the component, the lower the viscosity required to achieve optimum fluid dynamics. The slower the component (HD), the thicker the viscosity needed to achieve optimum interelationship with bearing surfaces.
The viscosity issue is one of the ongoing battles I have to deal lwith as the mentality of "if two asperins are good, four must be better" applied to "if 10W40 is good then 15W-50 must be better" In most cases it is not... The thicker oil robs horsepower, creates unwanted heat (especially in an air cooled engine), and can/will cause accelerated bearing interface wear as the oil simply cannot keep up with the bearing face speeds.
George Morrison, STLE CLS