Originally Posted by Kamele0N
Originally Posted by edhackett
That makes it even more important to run the Stihl Ultra. It was specifically formulated to minimize valve deposits in these engines.
Ed
Why? Is there any "higher" standard than JASO FD/ API TC+ TiSi ISO L-EGD etc...?
No, those, including FD are the highest ratings currently. Exactly what in those specifications specifically addresses the formation of valve deposits in a four stroke engine?
Ultra is "only" FB rated, yet is known to be one of the cleanest running two stroke oils available, outperforming many FD rated oils. FB, FC, and FD have the same lubricity requirements. FC and FD add cleanliness requirements. It would appear that it is more complicated that just having an FD rating.
https://en.wikipedia.org/wiki/JASO_M345
I can't seem to locate the white paper that I saw that this bit of marketing is based. It shows the FB rated Ultra cleaning better than their FD rated Super.
https://www.flyinggiants.com/forums/showatt.php?attachmentid=439539&d=1326250713 (will download a pdf).
Valve deposits that lead to valve sticking is a thing with this technology in both Stihl OPE and model airplane applications. It's not the place to cheap out on oil. My research when looking into what oil for my Saito four stroke gasoline engines and the more traditional two stroke gas model airplane engines lead to a virtual tie between Stihl Ultra, Redline Racing, and Red Armor when it came to wear and cleanliness in a traditional two stroke. Stihl's blending of the Ultra to address the specific issues concerning their four stroke engines tipped it to be the choice for the one two stroke oil to have on hand for all of my OPE and model engines.
Ed
Originally Posted by edhackett
That makes it even more important to run the Stihl Ultra. It was specifically formulated to minimize valve deposits in these engines.
Ed
Why? Is there any "higher" standard than JASO FD/ API TC+ TiSi ISO L-EGD etc...?
No, those, including FD are the highest ratings currently. Exactly what in those specifications specifically addresses the formation of valve deposits in a four stroke engine?
Ultra is "only" FB rated, yet is known to be one of the cleanest running two stroke oils available, outperforming many FD rated oils. FB, FC, and FD have the same lubricity requirements. FC and FD add cleanliness requirements. It would appear that it is more complicated that just having an FD rating.
https://en.wikipedia.org/wiki/JASO_M345
I can't seem to locate the white paper that I saw that this bit of marketing is based. It shows the FB rated Ultra cleaning better than their FD rated Super.
https://www.flyinggiants.com/forums/showatt.php?attachmentid=439539&d=1326250713 (will download a pdf).
Valve deposits that lead to valve sticking is a thing with this technology in both Stihl OPE and model airplane applications. It's not the place to cheap out on oil. My research when looking into what oil for my Saito four stroke gasoline engines and the more traditional two stroke gas model airplane engines lead to a virtual tie between Stihl Ultra, Redline Racing, and Red Armor when it came to wear and cleanliness in a traditional two stroke. Stihl's blending of the Ultra to address the specific issues concerning their four stroke engines tipped it to be the choice for the one two stroke oil to have on hand for all of my OPE and model engines.
Ed
