Is anything like this used in race fuels or 4-stroke fuels?
2-Cycle Oils VOA Analysis
- Thread starter MolaKule
- Start date
MolaKule
Staff member
Yes.
Found some YT content with VOA's :
Yamalube 2 & 2M (att.1) :
.........
Yamalube 2S+ and others (att.2)
...........
Some others ,see links for description/lab data/packaging :
https://drive.google.com/drive/folders/1znuY39borgQ69nZXlBx7Fpf5EsOQbqF3
Yamalube 2 & 2M (att.1) :
.........
Yamalube 2S+ and others (att.2)
...........
Some others ,see links for description/lab data/packaging :
https://drive.google.com/drive/folders/1znuY39borgQ69nZXlBx7Fpf5EsOQbqF3
MolaKule
Staff member
The guy used the opportunity to test the passenger car Shell Helix he uses for his own vehicle along with a Yamalube 2 imported and made in the Arab Amirates vs another Yamalube 2 sold by the official Yamaha Importer (turned identical despite the slight difference in labels).
The 2M is TC-W3-certified.
The 2M is TC-W3-certified.
MolaKule
Staff member
Also notice that some (but not all) later 2-cycle fluids have a 100°C viscosity hanging around 7.0 cSt, versus the earlier 10.0 cSt oils.
The samples arrive at ALS on Monday; so I'd expect mid week to have the results. 
2 Stroke VOA are officially in process!
Just a quick update. ALS has never tested 5 of the 6 oils sent in. I'm just waiting for them to add the names to their database so they can release the reports. The guy that does this has been out of office this week. They say next week for sure.
I was thinking yesterday about the 2-stroke analysis and what's going on with them.
Thanks!
Thanks!
Are you by chance testing Amsoil Sabre or Valvoline TCW-3?
To accomplish that you need to burn faster and quicker, not slower and longer.
MolaKule
Staff member
"Combustion improvers increase burn time and reduce port deposits. The combustion improver borated polyisobutenyl (Mn 950) succinimide dispersant by a major additive company increased burn time by ~17% over prior combustion improvers with about 20% less deposits.
Increasing burn time by a few percentages means burning more hydrocarbons; burning more hydrocarbons mean fewer hydrocarbons being deposited at the exhaust port.
I understand. However, their wording is terrible. I think the really mean what I wrote.
Increasing burn times would lead to more unburnt HC in the exhaust.
Not that an MSDS is definitive, but I have never seen any of these compound you mention on one.
In truth most two cycle oils today that are JASO FD certified are PIB/mineral oil blends. They tend to work very well in air cooled equipment and high output non marine liquid cooled motors.
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MolaKule
Staff member
No not what you stated but data from the patent.
How so?
And you have done a comprehensive/forensic chemical analysis to determine this?
Its imperative for the combustion event to happen as fast as possible in a two cycle. For starters the longer you draw out the even the more heat you put into the piston. Piston heat is very much a limiting factor on a two stroke. In addition lazy combustion leads to an increased risk of detonation as it is a heat driven event that takes time to form. Lastly, lazy combustion leads to more unburnt HC because the exhaust port opens prior to everything being combusted.
All sorts of things are claimed on patents. I've never suggested I've seen a thorough chemical analysis. Have you ever seen one of these compounds in a two cycle oil in common usage? Genuinely curious.
The other thing is the primary source of unburnt HC in a two cycle is the fact that the transfers ports are open at the time time the exhaust port is open AKA crank case scavenging. Things like strato charging, TPI and DI came about to solve this problem. Of course all of those systems have problems associated with them as there is no free lunch and teething problems are a thing with newer technologies.
MolaKule
Staff member
Any future discussion of 2-cycle oil formulations are to be discussed in the Forum below:
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