A new ULTRA and it's GREEN !!

[Y_K]

Of course, for the engines 'designed for low viscosity modern oils' everybody wins. Tighter tolerances is another argument we hear.. Tighter tolerances showed up in 80s btw and yet tight tolerances alone do not call for the low viscosity oil. Anybody aware of an engine designed solely for an oil?

How about Saab, BMW and VAG folk? When are they scheduled to switch to Gary Allan elixir? Aren't those xW40+ eaters built with tighter tolerances? What about thermal mass transfer within those tight tolerances?

The balance is not easy to achieve

 

[JCCADILLACMOBILE]

Originally Posted By: demarpaint
Originally Posted By: bradepb
Originally Posted By: Y_K
Prove me that lower viscosity provides better wear protection and I will switch..

Aside from being al gore green what other benefits does it provide?


no offense and not trying to be smart, but where have you been the last ten years? this has been discussed so much it's realy getting old. lighter oils in the correct applications are well proven by this time.


+1 Every so often this dead horse comes back from the grave and starts galloping again. Lighter oils used in engines spec'd for them are working just fine.


Less Internal Resistance = More Power.

Physics: 1
Other: 0.

 

[Y_K]

Originally Posted By: JCCADILLACMOBILE

Less Internal Resistance = More Power.

Physics: 1
Other: 0.


Under ideal conditions: yes. Add heat, pressure and ethanol to the equation. Some engines are better some are worse. Btw, a lot of Yaris engines don't pass compression check under 50k..

As for dead horse people: use your own head. You are very good at repeating opinions and postulates of others and giving references to dubious authority figures. Medical doctor turned mechanical engineer and tribologist is akin to Biochemistry PhDs cranking out Linux kernel code a decade ago. Not until SUN, Oracle and many others put their salaried pros to the task the biochemists could not clean out their magnificent crud. Expert knowledge of human vascular system automatically translates into auto inner workings expertise? It's a known psychological transitivity: success in one field makes you thing success in another field is guaranteed as well. The same doc spent 15-20 years of his life in schooling to get where he is in his profession yet it never occured that it may take similar amount of effort and time to become and expert in some other field. May be some Nobel Laureat in Astrophysics answers why German cars still use W40 oils? That would an authorative answer..

 

[CATERHAM]

According to a recent video of Jeff Jetter posted by Buster, this 0W-10 oil is in the process of being certified, so we might see it might be available at our Honda dealers in a year or so.

 

[ledslinger]

Y__K- has a point. There is a difference between the evidence showing 20W oils don't fail or have wear issues, and showing that they are better than higher visc oils. The former is proven, and if the latter is, I have missed it.

An interesting dilemma is that it appears the engines have to be designed or carfully toleranced for 10W oils. I can't recall anyone ever showing that there were any changes when Ford and Honda went to 20W oils.

Will many Hondas be back specced to 0W-10?

 

[addyguy]

I think Gary has said that 'technically', his Bruceblend 0W-10 is actually a very, very thin 0W-20, or even '0W-15', b/c it still has a HT/HC of 2.6. I think he relayed that Bruce said below 2.6 HT/HS volatility became a major problem.

I don't think we will ever see a 'true' 0W-10 in regular use. I think 5-6cst @100C oils with a HT/HS like Bruce's may become a reality, but technically they'd be '0W-15's'...I think that will be the limit, as volatility has to be controleed for emmissions in NA.

 

[mercuryblues]

I'm going to shift gears in this topic a little bit. Just last week, the new federal (CAFE?) regs were moved up four years to 2016, instead of 2020. If I understand correctly, these new regs require a manufacturer's vehicle lineup to average 35 MPG. Because of this, I have a feeling that we will see more use of the 0w10 oils in the not-so-distant future.

 

[CATERHAM]

Originally Posted By: addyguy
I think Gary has said that 'technically', his Bruceblend 0W-10 is actually a very, very thin 0W-20, or even '0W-15', b/c it still has a HT/HC of 2.6. I think he relayed that Bruce said below 2.6 HT/HS volatility became a major problem.

I don't think we will ever see a 'true' 0W-10 in regular use. I think 5-6cst @100C oils with a HT/HS like Bruce's may become a reality, but technically they'd be '0W-15's'...I think that will be the limit, as volatility has to be controleed for emmissions in NA.


Volatility is not a technical problem for a formulator as 10wt and even 5wt oils can be made with low NOACK percentages, it just requires a higher percentage of GP IV & V in the formulation. The issue then becomes cost.