N395V
Well Known Member
This subject probably belongs in the "Neverending debate" section but there was no subforum for fuel/oil aditives.
The MMO debate came up recently on a Warbird forum and I was surprised to see the usual by the book crowd largely endorsing something that is not backed up by any objective evidence. Many put it in their fuel because Uncle Bob used it in WWII or they know someone who knows someone etc. There were no detractors on the forum.
Its purported use (for us) is as a valve lubricant to replace decreasing amounts of TEL and as a scavenger of that same lead to prevent plug fouling.
I have been searching for some form of proof to support or refute it's multiple miracle claims.
Finally I came acrosss a well conducted scientific evaluation by a diesel users group. Deisel users have become concerned with the loss of lubricity of diesel fuel as the epa has mandated lower levels of sulfur just as we fear the losss of lubricity providedby TEL.
While we do not use diesels this is a study of at least the lubrication part of the equation.
The study can be found at http://www.johnfjensen.com/Diesel_fuel_additive_test.pdf
It is interesting that it demonstrates not only no enhancement of lubrication but an actual deterioration in lubrication of the medium it is added to.
The MMO debate came up recently on a Warbird forum and I was surprised to see the usual by the book crowd largely endorsing something that is not backed up by any objective evidence. Many put it in their fuel because Uncle Bob used it in WWII or they know someone who knows someone etc. There were no detractors on the forum.
Its purported use (for us) is as a valve lubricant to replace decreasing amounts of TEL and as a scavenger of that same lead to prevent plug fouling.
I have been searching for some form of proof to support or refute it's multiple miracle claims.
Finally I came acrosss a well conducted scientific evaluation by a diesel users group. Deisel users have become concerned with the loss of lubricity of diesel fuel as the epa has mandated lower levels of sulfur just as we fear the losss of lubricity providedby TEL.
While we do not use diesels this is a study of at least the lubrication part of the equation.
The study can be found at http://www.johnfjensen.com/Diesel_fuel_additive_test.pdf
It is interesting that it demonstrates not only no enhancement of lubrication but an actual deterioration in lubrication of the medium it is added to.
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